Hole Saw Kit, 8-Piece, Quick Change, Bi-Metal Body, Applicable Materials: Aluminum, Fiberglass, Plastic, Steel, Tin and Wood, 5/16 in Shank, Includes: (1) 19136 7/8 in, (1) 19141 1-1/8 in, (1) 19146 1-3/8 in, (1) 19152 1-3/4 in, (1) 19155 2 in, (1) 19162 2-1/2 in Hole Saw, (2) 38522 Arbor with Pilot Drill, (1) 37156 Arbor with Pilot Drill, 1-5/8 in Cutting Depth