Stable and Durable: carbide cutting tips and heat-resistant coating for Durable, sharp and Durable performance, precisely balanced for smooth operation. Good lusure resistance, long service life. Extra Long: Extra Long straight cutter of 8 mm diameter darbre, cutting width 14. Extra long straight wick for a soft cut of the wood. Professional quality cutters, solid tempered steel body to control the cutting depth and work safely. wide range of applications: use this set of versatile and extra-long straight cutters for all straight cuts, with 2-edged carbide cutters. Can better cut deep and smooth the edges. what you get: 3 straight router tips with 8mm rod. Larbre diameter: 8 mm; Cutting diameter: 12 inch (12.7 mm); Cutting length: 50mm 63mm 76mm; Total length: 83 mm 95 mm 109 mm.