---
product_id: 81247863
title: "Alloy_Steel Set-Your-Own Polished Combination Padlock, Die-Cast, Black"
brand: "master lock"
price: "¥12443"
currency: JPY
in_stock: true
reviews_count: 13
category: "Master Lock"
url: https://www.desertcart.jp/products/81247863-alloy-steel-set-your-own-polished-combination-padlock-die-cast
store_origin: JP
region: Japan
---

# 4-digit customizable combo Weatherproof die-cast alloy body Hardened steel cut-resistant shackle Alloy_Steel Set-Your-Own Polished Combination Padlock, Die-Cast, Black

**Brand:** master lock
**Price:** ¥12443
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your security, unlock your peace of mind.

## Quick Answers

- **What is this?** Alloy_Steel Set-Your-Own Polished Combination Padlock, Die-Cast, Black by master lock
- **How much does it cost?** ¥12443 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/81247863-alloy-steel-set-your-own-polished-combination-padlock-die-cast)

## 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

- • **Compact Yet Robust Design:** 2-inch wide lock body fits perfectly on lockers, gates, and gym lockers without bulk.
- • **Set Your Own 4-Digit Code:** Thousands of unique combos for personalized security and zero key hassle.
- • **Effortless Combination Reset:** Includes a change tool for quick, secure code updates—stay one step ahead.
- • **Weatherproof Die-Cast Alloy Body:** Durable polished finish designed to brave rain, sun, and outdoor elements.
- • **Cut-Resistant Hardened Steel Shackle:** Engineered to withstand cutting attempts, keeping your belongings safe.

## Overview

The Master Lock 178D is a polished, die-cast alloy combination padlock featuring a customizable 4-digit code, hardened steel shackle for cut resistance, and weatherproof construction. Ideal for indoor and outdoor use on lockers, gates, and gym equipment, it offers durable, keyless security with easy reset functionality.

## Description

Master Lock 178D set your own die cast combination lock 2-inch (51mm) wide body. Easy to set and reset. Four digit dialing allows for thousands of possible combinations. Combination change key included.

Review: Excellent Quality Lock - The Lock is of Very Good Quality...Heavy and Strong....This is the first time I ever purchased such a good lock...
Review: Perfect replacement - Replacement for key locks to a strong, sturdy and all weather number lock. Choice of setting combination of 4 numbers. Recommended specially for all weather use.

## 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 | #75,726 in Home Improvement ( See Top 100 in Home Improvement ) #123 in Combination Padlocks |
| Brand | Master Lock |
| Colour | Black |
| Connectivity Protocol | Wi-Fi |
| Controller Type | Combination control |
| Country of Origin | USA |
| Finish Type | Polished |
| Generic Name | Set Your Own Combination Lock |
| Included Components | 1 padlock |
| Item Dimensions LxWxH | 33 x 51 x 84 Millimeters |
| Item Weight | 136 g |
| Item dimensions L x W x H | 33 x 51 x 84 Millimeters |
| Item model number | 178D |
| Lock Type | Combination Lock |
| Manufacturer | Master Lock |
| Material | Alloy Steel |
| Model Name | Set Your Own Combination Lock |
| Number of Pieces | 1, 4, 8 |
| Product Dimensions | 3.3 x 5.1 x 8.4 cm; 136.08 g |
| Recommended Uses For Product | outdoor , indoor |
| Shape | Square |
| Special Feature | Cut Resistant, Weather Resistant |
| Style | Classic |
| UPC | 354123436162 |

## Product Details

- **Brand:** Master Lock
- **Item dimensions L x W x H:** 33 x 51 x 84 Millimeters
- **Lock Type:** Combination Lock
- **Material:** Alloy Steel
- **Special Feature:** Cut Resistant, Weather Resistant

## Images

![Alloy_Steel Set-Your-Own Polished Combination Padlock, Die-Cast, Black - 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

### ⭐⭐⭐⭐⭐ Excellent Quality Lock
*by A***I on 26 February 2024*

The Lock is of Very Good Quality...Heavy and Strong....This is the first time I ever purchased such a good lock...

### ⭐⭐⭐⭐⭐ Perfect replacement
*by $***D on 4 August 2022*

Replacement for key locks to a strong, sturdy and all weather number lock. Choice of setting combination of 4 numbers. Recommended specially for all weather use.

### ⭐⭐⭐⭐⭐ 5 Star
*by  on 23 April 2023*

If your a fan of a keyless existance like I am ans are looking for a solid numbered lock, just go for it!

## Frequently Bought Together

- Master Lock 178D Set Your Own Combination Lock, 1 Pack, Black
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**Shop now:** [https://www.desertcart.jp/products/81247863-alloy-steel-set-your-own-polished-combination-padlock-die-cast](https://www.desertcart.jp/products/81247863-alloy-steel-set-your-own-polished-combination-padlock-die-cast)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*