The tip of the carbide tip is built to last! Just push it down. No hammer required! Round grip prevents fatigue and pain. [Applications/Features] Built-in strong spring allows you to mark it with just a few press. Adjust the punch to match the hardness of the finished product. Uses a round resin grip that reduces fatigue and reduces hand pain. The tip is made of a carbide tip for a long time. Applicable materials: Iron, aluminum, copper, wood, concrete, block; [Materials] Grip: P.P, Body: Brass; Needle: Carbon tool steel nickel plating; Needle tip: Black finish; Needle tip: Carbide