Cir-Kit Concepts Dollhouse Miniature Pilot Hole Punch/Bit/2 Needles #CK1014-1 An essential tape wiring installation tool, the Pilot Hole Punch provides a convenient method of making starter holes for brass brads at all electrical interconnection points. The diameter of the punching tip is smaller than the smallest brad used, thus reducing the risk of punching excessively large holes in the copper foil tape runs. This ensures creation of the correct size hole for positive electrical connection. The locking chuck provides an easy method of needle replacement in the event of breakage. Overall length is 4-13/16" with a handle diameter of 3/8". Overall length is 4-13/16" with a handle diameter of 3/8". Detailed scale model for adult collectors. Not intended for children under 14