[Specifications and packaging] 30 PCS hex shank twist drill bit set,include size 29pcs hex twist drill 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2" and 1pc 60 (L)quick change bits holder all in BMC.
[Function]Metal drill bit set is suitable for metal/wood sinks, metal (steel, aluminum, iron), wood, plastic, PVC (not for walls).
[Material]Imapct twist drill bits are made of high speed steel and titanium coated. The classic high speed steel construction is coated with titanium in order to increase toughness and durability.
[Advantages]135-degree double back angle and torsion design for hss drill bits increases cutting speeds and allows for easy self-centering to prevent movement.The blades are heat-treated and cleaned at high temperatures to ensure sharpness，and the vibration-free design ensures precise hole alignment and cleaning, which quickly removes residue and leaves a clean, smooth hole.
[Quick Replacement, Safe Installation]1/4 inch hex shank of titanium drill bits allow for easier and safer mounting on all power tools and are especially suited for locking onto quick-change chucks. We also offer quick change adapters for better quick changes.
