The double-sided blade is made of Metal with thick heat resistance, which is a perfect tool for removing spot-welded panels or metal plates. It will not distort the metal or damage the underlying panel, and reduce the need to pry and the weld. The 3/8-inch cutting spot welding remover is suitable for most 1/4-inch drills, and the spindle with plane can remove the rotation in the chuck. Provide accurate cutting function around the spot solder joint, and quickly cut clean and burr-free round holes. Suitable for iron, cast iron, alloy steel, carbon steel, die steel, die grinder, vehicle repair, drilling, body renovation and so on. Fix the solder joint with the nail in front and press it down (there is a spring device at the back of the nail that can expand and contract); When the touches the solder joint surface, the solder joint can be removed by rotating with the electric tool. Name: Solder joint removal drill set Quantity: 13pcs/set Colour:silver+black Material:Metal Package Contents: 1 x Solder joint removal drill set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.