Feature

●Material: High speed steel, titanium coated surface, clear color, sharp drill extension tool life
●Uses: For processing thin steel plates, aluminum plates, wood, resin, etc. Can be used for drilling, enlarging holes, chamfering, and deburring
●Features: The tip to step shape is like a barb saw so you can drill holes in any size from large to small holes
●It is easy to carry anywhere and prevents the drill from falling or losing it
●Quality assurance: If you purchase a defective drill bit, please contact me via email, we can exchange it for free


Description

PACKAGES
Size: 0.16 - 0.57 inch (4 - 12 mm), 0.08 inch (2 mm) increments (0.23 inch (4 / 6 / 8 / 10 / 12 mm)), Number of Steps: 5
Size: 0.1 - 0.5 inch (3 - 12 mm), 0.04 inch (1 mm) increments (3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 mm), Number of Steps: 10 hex shafts.
Size: 0.2 - 0.8 inches (4 - 20 mm), 0.1 inch (2 mm) increments (4 / 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20 mm), Number of Steps: 9 Levels, Hex Shank.

Note:
* The step drill is mainly set with impact driver. Slowly press the impact driver until the size you want to drill a hole. NEVER OPEN! This may cause injury or damage.
* Be sure to wear protective glasses, masks and work gloves while working. If you drill a hole, please do not force it or swing it from left to right.
* For stone, wall, glass as it may damage the drill, please do not use it.
* During use, it is easy to tempering at high temperature, just pour water and let it cool. Otherwise, the drill blade will be cut off quickly.