This electronic part is a center punch manufactured by KING TONY. It is designed for marking steel, aluminum, brass, and other metals. It is a cylindrical punch with an in-built, spring loaded pin to give a precise and centered indentation on the surface. The hardened tip ensures a perfect, clean and precise hole, every time. The punch is made of durable alloy steel that can withstand a lot of wear and tear. It comes with a 4.39" length and 0.3" diameter.