5 inch automatic center pin punch spring loaded marking starting holes tool high speed steel automatic centre punch dot punch

simple and accurate to use knurled handle prevents slipping.gives precise starting point on steel and other solid materialsallows you to easily mark work using one hand prior to drilling which will prevent the drill from slipping. automatic spring loads then releases at of cycle with force to create center punch (no hammer needed)spring pressure can be adjusted by simply rotating the knurled of the punch.