--- product_id: 57248710 title: "Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack" brand: "master lock" price: "¥7078" currency: JPY in_stock: true reviews_count: 4 category: "Master Lock" url: https://www.desertcart.jp/products/57248710-master-lock-178d-set-your-own-combination-lock-black-1 store_origin: JP region: Japan --- # 4-digit customizable combo weather-resistant solid body hardened steel shackle Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack **Brand:** master lock **Price:** ¥7078 **Availability:** ✅ In Stock ## Summary > 🔐 Lock in your peace of mind with customizable, weatherproof strength! ## Quick Answers - **What is this?** Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack by master lock - **How much does it cost?** ¥7078 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/57248710-master-lock-178d-set-your-own-combination-lock-black-1) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Withstand:** Hardened steel shackle and solid zinc body deliver reliable cut resistance and weather durability. - • **Trusted Durability:** Master Lock quality withstanding years of outdoor exposure without rust or failure. - • **Versatile Protection:** Perfect for gym lockers, school lockers, gates, and sheds—your everyday security essential. - • **Personalized Security:** Set your own 4-digit code for effortless, unique access—no keys, no hassle. - • **Smart Locking Mechanism:** Won't lock unless combination is scrambled—prevents accidental security lapses. ## Overview The Master Lock 178D is a compact, black combination padlock featuring a resettable 4-digit code, a hardened steel shackle for cut resistance, and a weather-resistant solid zinc body. Designed for indoor and outdoor use, it offers versatile security for lockers, gates, and sheds. Its smart locking mechanism ensures it only locks when the combination is scrambled, preventing accidental openings. Trusted by thousands with a 4.6-star rating, this lock balances convenience, durability, and reliable protection. ## Description Free delivery and returns on all eligible orders. Shop Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack. Review: Awesome little lock. - This is a light and smallish look, with the shackle about 1-inch (thumb-tip to thumb-knuckle) across. A determined thief will kill it with a bolt cutter without too many problems, but as a casual deterrent it'll do a great job. The combination mechanism is in the bottom of the lock, with a small plastic "skirt" around it that will direct water away from the mechanism unless you install the lock the wrong way up! It's also quite neat in that it will only re-lock after you have scrambled the access code. If you try to close the lock with your desired combination still set, it'll refuse to lock. You can't click it closed but inadvertently leave it openable just with a pull. Setting or altering the combination involves a separate side key that is used to override the security mechanism - provided you have entered your existing code first. You will need to keep this side-key safe somewhere. Value for money, yes! We have other Master locks and they work well even after years in the elements. It's a bit bulky compared to a key lock, but seems solid enough. Review: Fantastic lock - I bought this a few months ago for my locking up my shed. I wanted a coded lock to avoid having another key. The lock is very sturdy and secure and absolutely no rust so far. Very happy with my purchase ## Features - Indoor and outdoor padlock is best used as a school locker lock, gym lock, and gate lock, providing protection and security from theft - Set your own four-digit combination lock for easy combination recall; Combination change tool included - Combo lock is constructed with a solid body for strength and weatherability, hardened steel shackle for cut resistance - 2 inch (51 millimeter) wide lock body; 5/16 inch (8 millimeter) diameter shackle with 1 inch (25 millimeter) length, 1 inch (25 millimeter) width - Shackle is preset to open on 0-0-0-0. Some instructions may incorrectly state shackle opens on l-o-c-k. See user manual in technical specifications section of this page for correct combination reset instructions. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0009V1WMA | | Best Sellers Rank | 88,458 in DIY & Tools ( See Top 100 in DIY & Tools ) 225 in Combination Padlocks | | Brand | Master Lock | | Colour | Black | | Control Method | Touch | | Controller Type | Hand Control | | Country of Origin | China | | Customer Reviews | 4.6 out of 5 stars 13,930 Reviews | | Finish | Painted | | Included Components | 1 padlock | | Item Dimensions | 33 x 51 x 84 millimetres | | Item Type Name | Set Your Own Combination Lock | | Item Weight | 136 g | | Item dimensions L x W x H | 33 x 51 x 84 millimetres | | Lock Type | Combination Lock | | Lock type | Combination Lock | | Manufacturer | Master Lock | | Material | Zinc | | Model Number | 178D | | Recommended Uses For Product | Security | | Recommended uses for product | Security | | Shape | Square | | Special Features | Resettable Combination Lock | | Special feature | Resettable Combination Lock | | Style | Standard | | UPC | 354123436162 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Master Lock - **Item dimensions L x W x H:** 33 x 51 x 84 millimetres - **Lock type:** Combination Lock - **Material:** Zinc - **Special feature:** Resettable Combination Lock ## Images ![Master Lock 178D Set Your Own Combination Lock, Black, 1 Pack - Image 1](https://m.media-amazon.com/images/I/51vlZGP36sL.jpg) ## Questions & Answers **Q: Does this lock have any harmful chemicals Prop 65** A: Don’t put it in your drink or cook with it, if it mixes into your drink or food it could make you sick but I believe the report said you’d have to do that 834 times to have a negative affect on you. But on a side note I read just the paper from the Prop 65 rule could make you violently sick if you eat all the paper in just one setting. **Q: Is it for outdoor use?** A: It hasn't fared well for us. We have an older one which held up for about 3 years before needing to be replaced. The lifetime warranty allows you only one replacement, so it really isn't a lifetime warranty at all. If you live near the beach, consider yourself lucky if it works for 2-3 years. That said, it is for outdoor use, just expect to lubricate frequently especially after rain or if you live near saltwater. **Q: What's the diameter of the shackle? I need to make sure it can fit through a hole in a security box.** A: 5/16"http://www.allpadlocks.com/cgi-bin/ez-catalog/product_images.cgi?account=X380790;product_id=M178;image=images%2Fcatalog%2F178sketch.jpg **Q: Lost the change key -- how to reset the combo without it?** A: you can just use a small screwdriver to push in and change the combo while doing so. The Key really just holds down the bar inside for you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Awesome little lock. *by R***D on 7 April 2025* This is a light and smallish look, with the shackle about 1-inch (thumb-tip to thumb-knuckle) across. A determined thief will kill it with a bolt cutter without too many problems, but as a casual deterrent it'll do a great job. The combination mechanism is in the bottom of the lock, with a small plastic "skirt" around it that will direct water away from the mechanism unless you install the lock the wrong way up! It's also quite neat in that it will only re-lock after you have scrambled the access code. If you try to close the lock with your desired combination still set, it'll refuse to lock. You can't click it closed but inadvertently leave it openable just with a pull. Setting or altering the combination involves a separate side key that is used to override the security mechanism - provided you have entered your existing code first. You will need to keep this side-key safe somewhere. Value for money, yes! We have other Master locks and they work well even after years in the elements. It's a bit bulky compared to a key lock, but seems solid enough. ### ⭐⭐⭐⭐⭐ Fantastic lock *by D***S on 20 November 2024* I bought this a few months ago for my locking up my shed. I wanted a coded lock to avoid having another key. The lock is very sturdy and secure and absolutely no rust so far. Very happy with my purchase ### ⭐⭐ A good visual deterrent but not much else. *by A***X on 6 December 2024* This is a nice, easy to use, sturdy combination lock however it should only be used as a visual deterrent. Unfortunately the lock is not shielded and a small shim or knife can be pushed past the dials to bypass the locking mechanism in less time than it takes to enter the combination. ## Frequently Bought Together - Master Lock 178D Set Your Own Combination Lock, 1 Pack, Black - Casio F108WH Series | Men's Digital Watch | Illuminator | Water Resistant | LED Light | Daily Alarm | 1/100 SEC Stopwatch | 3 Hands (HR, Min, SEC) | Date/Day Display | Daily Alarm | 7 Year Battery - GLORYFIRE Waterproof Notebook All Weather Shower Pocket Tactical Notepad with Cover Steno Pad Memo Book --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/57248710-master-lock-178d-set-your-own-combination-lock-black-1](https://www.desertcart.jp/products/57248710-master-lock-178d-set-your-own-combination-lock-black-1) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-19*