【Hole Saw Set】13PCS Hole Saw blades: 3/4" (19 mm), 7/8" (22 mm), 1"(25mm),1-1/8" (29 mm), 1-1/4" (32 mm), 1-1/2" (38 mm), 1-3/4" (44 mm), 2" (51 mm), 2-1/2" (64 mm), 3" (76 mm), 3-1/2" (89 mm), 4" (102 mm), 5" (127 mm). 【Accessories】2-Piece mandrels/arbor, 4-Piece drill bits, 1-Piece hex key wrench, 1-Piece installation plate. 【Durable Material】High carbon steel for rust resistant, long life. 【Professional Woodworking】Ideal for softwood, plywood, plastic plate, plasterboard and thin PVC board. Cannot be used on hard wood, cement, glass, metal. 【Warm Tips】Can be used with electric drill, impact drill, If you need very precise holes, please use bench drill. Not suitable for cutting depths beyond about 1"(25 mm).