Presa PSHP9C 00200 Hollow Punch Tool Kit for Metal and More (9 Piece) Use this hole-punch set to punch holes in wood, plastic, metal, and more Includes: 1/2, 7/16, 3/8, 5/16, 1/4, 7/32, 3/16, 5/32, and 1/8-in Made of heavy duty carbon steel Designed with knurled body for secure grip Sharp circular design for precise holes