Milled and ground HCS steel drill bits. Coated for increased corrosion resistance. Drills clearance holes and countersink in one operation. Ready fitted with high performance wood drill bit. Sizes: 3, 3.5, 4, 4.5, 5, 5.5 and 6mm. Includes hex key and blow-moulded case. Milled and ground HCS steel drill bits. Coated for increased corrosion resistance. Drills clearance holes and countersink in one operation. Ready fitted with high performance wood drill bit. Sizes: 3, 3.5, 4, 4.5, 5, 5.5 and 6mm. Includes hex key and blow-moulded case.