Description
1.The drill bit is made of high quality S2 alloy steel ,with sturdy hardened & tempered construction.which is durable and suitable for industrial use..2.include 12 Pack Hex Head Sizes SAE: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and one Quick Release Bar..3.include 11 Pack Hex Head Sizes Metric: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm, 10mm, 12mm..4.The drill bit can be inserted into any 1/4 inch hex shank power drill and hand tool.Strong magnetic, high precision..5.with bits rack,better storage.widely used for household tool repairs. drill bits can also be used in many other protected parts.