Stable and Durable: Carbide cutting tips and heat-resistant coating for long-lasting, sharp and long-lasting performance, precisely balanced for smooth operation. Good wear resistance, long service life. Extra Long: Extra long straight cutter with 8 mm shaft diameter, cutting width 14. Extra long straight bit for gentle cutting of wood. Professional grade cutters, solid hardened steel body to control cutting depth and work safely. Wide Range of Applications: Use this versatile, extra-long straight cutters set for all straight cuts, with 2-edged carbide cutters. Can cut deeper and smooth edges better. What You Get: 3 x 8mm shank straight router bits. Shaft diameter: 8mm; Cutting diameter: 1/2 inch (12.7mm); Cutting length: 50mm/63mm/76mm; Total length: 83mm 95mm 109mm.