About this item 8mm Shank Planer Cutter with 6 bearings (1/8", 1/4", 5/16", 3/8", 7/16" and 1/2"). Interchangeable bearings for cutting different rabbet depths produce smooth cuts on both surfaces. Industrial grade tungsten carbide blade, Teflon coated heat and buildup resistant, Solid hardened steel body with anti-kickback design. Cuts all composite materials, plywoods, hardwoods and softwoods. Use on portable and table mounted routers. Features: 1.These solutions work best when using a router table. 2.Used for cutting hardwood with this passes through. 3.They are tight and flush. 4.Made of case-hardened carburetor and durable performance. Returned from Security: 1. The bladed product is not for use by those under the age of 18. 2. The item is only for industrial cutting/engraving, not hazardous item. 3. At the drill bit, wear good protective measures, in case chips are thrown into the eyes. Specification: Material: Carburetor tip File d wait: 8mm Size: as shown Quantity shipped: 2 lucky meet Note: The data is manual measurement, please allow 1-13cm error, due to light and screen differences, there will be a certain color difference, the specific received in kind prevail.