Name: 7 Bearings Adjustable Knife Specifications: 1/4x1-1/2 Weight: 160g Colour:Photo Color Material:Stainless steel Size:8.7 x 3.9 x 3.9cm Package Contents: 1 x 1/4 Handle Bearing Knife Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Widely Used: Great for wood, MDF, solid wood, particle board, plywood, wooden door frames, wooden window frames, wooden cabinets and boxes, plywood compact panels, professional DIY tools for and hobbyists. High Compatibility: All slot mills are compatible with all 1/4inch routers, can be used on CNC and other automatic routers as well as handheld and benchtop. INTERCHANGEABLE BEARINGS: Cuts notches of varying depths for smooth cuts on both surfaces Use on handheld and table top portable routers Cuts all composites, plywood, hardwoods and softwoods Integral with anti- design hardened steel body ULTRA : The 1/4 shank milling cutter set is made of K10 YG6X carbide with micro-grain grade for higher strength and maximum resistance. Reduce chips and burrs in your projects. Silver induction brazed for maximum strength and durability, accurate and easy to change depth. GREAT FOR WOODWORKING: The selection of different rebate depths for the slotting cutter set is very convenient. Bearings are interchangeable with other knives for greater flexibility. Designed to create T-slot siding and radius edges on T-slots. It is perfect for and hobbyists of all skill levels.