High Quality: The sharp carbide blades are made of durable hardened steel with a drop-resistant coating and a recoil-resistant design. Precise cutting reduces chips and burrs. High-precision grinding technology, stable and efficient. Practicality: 4 blades ensure fast and clean cutting of project materials for rebuilding or planing the spoiler surface, ideal for any complex project. Compatibility: The handle diameter of all tools is 8 mm and is suitable for all hand and bench grinders with an 8 mm drill chuck. Widely Used: For solid wood, MDF, laminate, particleboard, steel, compact plywood, acrylic, etc. Avoid cutting metal and materials other than wood.