Description: Made with industrial micrograin carbide, provides increased strength and utmost resistance, for multiple use, smooth and detailed finish. Fits for professional electric drill, bench drill. Rpm close to 800-1000, while adding water for cooling is an advantage. Suit to rout out density board, hardwood, MDF, particle board, plywood, etc.. Baked on heat resistant coating prevents build-up of sawdust, resin, and pitch. CNC compatible. Two flute carbide cutters with ball bearing guides. Specification: Shank Diameter: 1/4"(6.35mm) Color: as picture shows Quantity: 12 Pieces / Set 6mm (1/4") straight bit 12mm (1/2") straight bit 16mm (5/8") straight bit 12.7mm (1/2") 90 deg "V" grooving bit 12.7mm (1/2") dovetail bit 32mm (1-1/4") 45 deg chamfer bit 12.7mm (1/2") flush trim bit R6.3mm (1/4") round over bit R9.5mm (3/8") round over bit R6.3mm (1/4") core box bit R6.3mm (1/4") cove bit R4mm (5/32") roman ogee bit Package Includes: 12 Pieces Router Bit (packed with wooden box) 1 x Wrench