Feature:
【STURDY MATERIAL】The drill bit is made of carbon steel material, high temperature quenching process, overall high temperature heat treatment, is sharper. And it has high hardness, wear resistance.
【SPIRAL FLUTE】The drill bit adopts the spiral chip flute design, with a wider groove shape.
【STRONG COMPATIBILITY】The drill bit has a universal standard 1/4inch hexagonal shank, which is suitable for a variety of models.
【ADJUSTABLE DRILL BIT】The drill bit is fixed on the hexagonal handle with a hexagonal screw to control the drill bit depth. It is equipped with a wrench, which is removable and convenient for adjusting drill bits of different lengths.
【WIDE APPLICATION】These drill bits are widly used, suitable for drawing grooves, cutting, drilling, and reaming on wood, thin iron sheet, angle iron and other materials. Cannot drill into walls.
【WHAT YOU WILL GET】You will receive 5pcs countersink drill bit (5#/6#/8#/10#/12#), 5pcs drill bit (replaceable drill bits, covering all screw sizes), 1pc wrench and 1pc storage box.

Specifications:
Color: black+silver drill bit, transparent storage box
Material: carbon steel drill bit, plastic storage box
Size: about
Countersink drill bit: (mm/inch)
LengthBlade LengthBlade Diameter
5#107/4.2149/1.932/0.08
6#106/4.1748/1.892.381/0.09
8#108/4.2554/2.132.778/0.11
10#109/4.2955/2.173.165/0.12
12#110/4.3356/2.23.572mm/0.14
Storage box: (L x W x H)9.5 x 6.3 x 1.4cm/3.74 x 2.48 x 0.55inch

Package Includes:
5pcs x Countersink drill bit
5pcs x Drill bit
1pc x Wrench
1pc x Storage box