--- product_id: 498988915 title: "CNC Spoilboard Surfacing Router Bit 1/4\" Shan, Slab Flattening Router Bit with 1-3/8\" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking" brand: "binstak" price: "¥15090" currency: JPY in_stock: true category: "Binstak" url: https://www.desertcart.jp/products/498988915-cnc-spoilboard-surfacing-router-bit-1-4-shan-slab-flattening store_origin: JP region: Japan --- # 4-sided carbide inserts for extended blade life 1.38" cutting diameter for efficient slab flattening 1/4" shank for universal CNC compatibility CNC Spoilboard Surfacing Router Bit 1/4" Shan, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking **Brand:** binstak **Price:** ¥15090 **Availability:** ✅ In Stock ## Summary > 🔧 Flatten like a pro, save like a boss! ## Quick Answers - **What is this?** CNC Spoilboard Surfacing Router Bit 1/4" Shan, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking by binstak - **How much does it cost?** ¥15090 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/498988915-cnc-spoilboard-surfacing-router-bit-1-4-shan-slab-flattening) ## Best For - binstak enthusiasts ## Why This Product - Trusted binstak brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Industrial-Grade Durability:** Super-strength alloy steel body with anti-kickback design for maximum safety and longevity. - • **Seamless CNC & Handheld Use:** Optimized for CNC routers, handheld, and table-mounted machines—upgrade your workflow effortlessly. - • **Cost-Effective Carbide Inserts:** Replaceable 4-edged carbide blades save you money—no need to buy a whole new bit. - • **Versatile Material Compatibility:** Perfect for soft/hard woods, MDF, plywood, laminate, acrylic, and more—your all-in-one surfacing solution. - • **Precision Engineered 2+2 Insert Design:** Balanced cutting action ensures ultra-smooth surface finishes every time. ## Overview The BINSTAK CNC Spoilboard Surfacing Router Bit features a 1/4" shank and 1.38" cutting diameter with a unique 2+2 insert carbide design. Engineered from industrial-grade alloy steel with anti-kickback safety, it delivers smooth, precise slab flattening on a wide range of materials. Its replaceable 4-sided carbide inserts maximize cost efficiency, making it ideal for both CNC and handheld woodworking routers. ## Description BINSTAK CNC Spoilboard Surfacing Router Bit 1/4" Shan, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking - desertcart.com ## Features - 2+2 INSERTS CNC ROUTER BIT: Shank: 1/4"; Cut Diameter: 1-3/8" ; Carbide Inserts: 12*12mm. 2+2 inserts design, resulting in a more balanced tool while running and get a smoother surface. The Router Bit comes with insert blades. For more blades, please purchase the K1222 model. ASIN：B0B1MJ9Z9P - INDUSTRIAL GRADE CNC WOOD ROUTER BIT: Super-strength steel body with anti kickback design, 4 cutting blades. - COST-EFFECTIVE INSERT BIT: The surfacing router bit utilizes 4-sided solid carbide inserts. All 4 edges of carbide inserts can be used, use a screwdriver to make other blade edge outside. Replace the carbide inserts when needed, instead of replacing the whole bit. Cost effective solution compared to brazed router bits and solid carbide spiral bits. - This planer router bit is perfect for wood slabs flattening, resurface or plane the top surface of the spoilboard. Used on soft and hard woods, particle board, MDF, plywood compact panel, laminate, acrylic and etc. - Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers. Such as woodworking engraving machine, trimming machine, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BNPYDT94 | | Best Sellers Rank | #11,238 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Edge Treatment & Grooving Router Bits | | Brand Name | BINSTAK | | Customer Reviews | 4.5 4.5 out of 5 stars (2,142) | | Cut Type | Straight Cut | | Cutting Diameter | 1.38 inches | | Included Components | Router Bit, 4 Extra Screws, T15 Wrench | | Item Diameter | 1.38 inches | | Item Weight | 0.12 kg | | Manufacturer | BINSTAK | | Material Type | Alloy Steel, Carbide | | Model | B216 | | Number of Flutes | 4 | | Number of Items | 1 | | Part Number | B216 | | Size Name | 1/4" Shank-1-3/8" Cut Dia. (2+2 Inserts) | ## Product Details - **Brand:** BINSTAK - **Cut Type:** Straight Cut - **Item Weight:** 0.12 kg - **Material:** Alloy Steel, Carbide - **Size:** 1/4" Shank-1-3/8" Cut Dia. (2+2 Inserts) ## Images ![CNC Spoilboard Surfacing Router Bit 1/4" Shan, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking - Image 1](https://m.media-amazon.com/images/I/51t16jiVngL.jpg) ## Available Options This product comes in different **Pattern, Size** options. ## Frequently Bought Together - BINSTAK CNC Spoilboard Surfacing Router Bit 1/4" Shank, Slab Flattening Router Bit with 1-3/8" Cutting Diameter, 2+2 Flutes Insert Carbide Wood Planer Router Bits, Planing Bit for Woodworking - BINSTAK - K1222 -Square Corner 12mm Carbide Inserts 4 Edges (12mm lengthX12mm widthX2.2mm thick-35 Degree Cutting Angle), 10pcs, Countersink Hole, for BINSTAK 1/4" Shank 1-1/4" Cut Dia. CNC Router Bit - VEVOR Linear Rail, 2PCS SBR20-1500mm, Linear Slide Rail, 4 PCS SBR20UU Bearing Block CNC Kit Linear Rails and Bearings Kit CNC Rails Linear Rail Set, for Automated Machines and Equipment --- ## 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/498988915-cnc-spoilboard-surfacing-router-bit-1-4-shan-slab-flattening](https://www.desertcart.jp/products/498988915-cnc-spoilboard-surfacing-router-bit-1-4-shan-slab-flattening) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-29*