13PCS hexagonal shank drill bit twist drill bit electric screwdriver drill bit electric screwdriver electric batch drill bit 2.5in~4.7in

 Specifications: 13PCS bit set,                                       including 1/16", 564",                            3/32", 7/64", 1/8",9/64",                          5/32", 11/64", 3/ 16",                             13/64", 7/32", 15/64",                             1/4" bit with 1/4 hex                               shank Instructions for use:  1. This drill can be installed with many types of machines such as ordinary hand electric drill, impact drill, bench drill and charging drill. The use range can be used above 0.4in  2. The overall HSS high-speed steel material of this drill bit is titanium-plated and hardened and heat-treated. It has high hardness, good wear resistance and long service life.  3. Possess drilling holes in wooden boards, thin iron sheets, aluminum sheets, plastics, etc. 4. Please wipe the stains on the surface of the product after each use, it is best to apply anti-rust oil to prevent rust