Designed to work with Allstar Performance Hammer Type Spring Steel Punch Part # ALL23116. Sold Individually.; Spring steel punches place a 1/4″ diameter hole 1/2″ from the end of Allstars 1″ x .062″ thick spring steel material. Built-in stop positions material for accurate hole placement. ALL23116, placed on a hard surface, can be struck lightly with a 3 to 4lb. hammer. ALL23117 may be placed in a vise, or handheld and impact driven, using a 3/4″ socket to punch spring steel mounted to race car.;.