Allstar Performance Replacement Mandrel is designed for use with Allstar's spring steel material (ALL23116 and ALL23117). It creates a 1/4" diameter hole precisely 1/2" from the edge of the .062" thick spring steel. The mandrel incorporates built-in stops to ensure accurate hole placement. When using ALL23116, place it on a solid surface and strike it lightly with a 3-4 pound hammer. ALL23117 offers more versatility. It can be secured in a vise or held by hand while using a 3/4" socket to punch holes in spring steel mounted on a race car.
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