Detailed Product Description 15pcs Router BitsMaterial: YG-8 Carbide Alloy Steel TipShank Diameter: 1/4"(6mm), 8mm, 1/2"(12mm) Specification:"V" Grooving Bit: 1/2", 1"Round Over Bit: R3/8"Round Cove Bit: R3/8"Roman Ogee Bit: R5/32"45°Chamfer Bit: R1/2"Slot Cutter Bit: R1/4"Straight Bit: 1/8", 1/4", 3/8", 1/2", 3/4"Bearing Flush Trim Bit: 3/8"Cove Box Bit: R1/8"Dovetail Bit: 3/8"