Description

Features: 1. Long service life 2. High strength, high hardness 3. Packed in plastic box to prevent loss and injury 4. There are teeth on both ends of the hole opener, which can be used interchangeably 5. Compared with pneumatic spot welding drills, the price is cheaper The main parameters: High-speed steel welding spot drill, double-end teeth, specifications 3/8'', 5/16'' Product packaging: single plastic tube Product specifications: the diameter of the serrated part has two types: 5/16"(8mm) and 3/8"(9.5mm) Product weight: single 27g (including plastic tube) Product material: the serrated part is 6542 high-speed steel Diameter of the shank: the size of the opposite side of the hexagonal shank is 8mm Product function and usage method: 1. Use the nails in the front to fix the solder joints and press them down (there is a spring device at the back of the nails to expand and contract); 2. When the serration touches the surface of the solder joint, it can be removed with the rotation of the electric tool.