6542 High-speed Steel 8mm Twist Drill Bit 250mm Length Black Oxide Brush Weather Stripping The air tube is high

The air tube is high flexibility

Thread Outer Diameter : 1/4 PT / 12

left right hinge pin is fixed in bottom leaf

electronics quakeproof-stickiness

2 Pole 6 Position design

6542 High-speed Steel 8mm Twist Drill Bit 250mm Length Black Oxide Brush Weather Stripping The air tube is high1. It is made of 6542 HSS (high speed steel) steel, which has good toughness and hardness, is not easy to break, and is easy to remove chips. Black oxide surface treatment, good rust resistance long durability. 2. The spiral groove design can avoid the displacement of the drill bit during the working process, and at the same time, the debris can be removed more quickly and easily. Sharp cutting edges provide smooth cutting without burrs. 3. The twist