Can drill out sunk hole for screw cap while drilling the screw hole,and keep them on the same axial; Suitable for the drilling machines with collets or adapters; Suitable for drilling hard woods.
Material: High speed steel 4241 + 45# steel
Other Features: Suitable drill size: 6# 2.38mm, 8# 2.78mm, 10# 3.175mm, 12# 3.56mm
Dimensions & Weight
Dimensions: 2.72 in x 0.47 in x 0.47 in (6.9 cm x 1.2 cm x 1.2 cm)
Weight: 2.01 oz (57 g)
4 x Sharp hole-opening drills
1 x Hex wrench