High Quality: Sharp cemented carbide blades are made of sturdy hardened steel, with a drop-resistant coating and a kickback-resistant design. Precision cutting reduces chips and burrs. High-precision grinding technology, stable and efficient. Exact Dimensions: 12.7mm spindle, 4 blade design, cutting height: 12.7mm, total length: 64mm. Practicality: 4 blades ensure fast and clean cutting of project materials for rebuilding or planning the spoiler surface, ideal for any complex project. Compatibility: The handle diameter is 12.7mm for all tools and suitable for all hand and table grinders with 12.7mm chuck. Widely Used: For solid wood, mdf, laminate, particle board, steel, compact plywood, acrylic, etc. Avoid cutting metal and non-wood materials.