6542 High-speed Steel 8mm Twist Drill Bit 200mm Length Black Oxide Timing Belts Shaft Coupler made of Stainless

Shaft Coupler made of Stainless Steel material

These are M8 threaded lamp nipple and they are hollow for threading cable

Screw Length: 20mm / 0

5-inch(L*W*H)

93" (L*W*H)

6542 High-speed Steel 8mm Twist Drill Bit 200mm Length Black Oxide Timing Belts Shaft Coupler made of Stainless1. 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