Main Features: - The self-centering point, do not need assistant center drilling or center punching.
- High hardness, rustproof, solid and durable.
- The drill material is HSS4241, the black part is carbon steel.
- Four Sizes: diameter 4mm / 5mm / 6mm / 8mm / 10mm. Package weight: 0.112 kg
Package Size(L x W x H): 6.00 x 1.50 x 10.00 cm / 2.36 x 0.59 x 3.94 inches Package Contents: 4 x Drill, 1 x Hex Wrench