About this item 1.8mm Shank Planer Cutter with 6 bearings (1 or 8", 1 or 4", 5 or 16", 3 or 8", 7 or 16" and 1 or 2"). 2.Interchangeable bearings for cutting different rabbet depths produce smooth cuts on both surfaces. 3.Carbide blade Industrial grade tungsten, heat and buildup resistant Teflon coating, Solid hardened steel body with anti-kickback design. 4.Cuts all composites, plywoods, hardwoods and softwoods. 5.Use on portable and table mounted routers. Features: 1.These solutions work best when using a table top. router. 2.Used to cut hardwood with this pass through. 3.they are tight and flush. 4.Made of carburetor hardened and durable performance. Safety Instructions: 1. The bladed product is not for use by those under the age of 18. 2. The item is only for industrial cutting or engraving, not dangerous item. 3. At the trephine, wear good protective measures, in case chips are thrown into the eyes. Specification: Material: Carburetor tip Queue: 8mm Size: as shown Quantity shipped: 2 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.