Widely applicable: The 3/8inch cut spot weld remover fits most 1/4inch drill bits, and the flat mandrel can the rotation in the chuck. Suitable for thin stainless steel plate, iron plate, aluminum plate, glass fiber reinforced plastic or other thin metal plates. High-quality material: The double-sided blade is made of high-standard heat- thick steel. High strength and hardness to quick separation of spot welded plates without deformation. The center pin on the drill bit is spring loaded. Spot welding tool: easy to replace when the blade starts to become dull. High speed and stability: Stable drilling, low cutting resistance, fast speed and no edge breaking. This project is perfect for removing spot welded panels or metal plates without distorting the metal or damaging the panels below, reducing the need for prying and breaking the weld. Colour: black Material: high-speed steel Package Contents: 1 * 3/8 spot welding drill 2 * center drill 11 * hole opener Only the above package content, other products are not included. Note: Light 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.