Double-edged cutting design, excellent concentricity for fast smooth and accurate trimming cuts for laminates and template work. Industrial Grade Carbide cutters and steel shank. Premium C3 Micro-grain Carbide Cutters for long-lasting performance. Cutting height: 1-Inch , Cutting Diameter: 1/4",5/16",3/8",1/2" with an top end bearing; Shank: 1/4- Inch. Build-up & heat resistant teflon coating can effectively prevent breakage or bending under high-speed working conditions. Use on CNC and other automatic routers as well as hand held and table mounted portable routers. Cutting Edge Material: Industrial Grade Carbide Shank: 1/4"/ 6.35mm Cutting Diameter: 1/4", 5/16", 3/8", 1/2" Cutting Depth: 13/16", 1", 1-3/16", 1-3/16" Length: 2-5/16", 2-31/64", 2-19/32", 2-9/16" Main function: Trimming, three-dimensional clearance angle, slotted.Items from Sheng Xinshun's shopProducts from KJ's store