Heavy Duty Snap Punch with Patented Hex Head. The Papa-Dent snap punch is capable of striking a heavier blow than standard center punches. Stroke impact can be set by turning knurled cap. Spring tension is constant for uniform depth and dimple size at each setting. This snap punch is a precise means of punching center holes for drilling in layout work allowing single hand operation which prevents drill bits from traveling. The steel point can be removed for replacement or sharpening. A large variety of tool tips can be interchanged with the tool head. Can be used for vehicle emergencies as a side window rescue glass breaking tool.