The Starrett KCS06001 6 Piece Cordless Smooth Cut Bi Metal Hole Saw Set is constructed of hardened heat and abrasion resisting high speed steel teeth. With a tough alloy body and cap, giving exceptional strength, durability, and shatter resistance. Designed for use with battery operated power tools, our Bi-Metal Cordless Smooth Cut hole saws will cut twice as many holes as the equivalent standard hole saw per battery charge. The complete hole saw assembly includes Arbor and Pilot Drill. Its flared base cap limits cutting depth to ½”. Specifications • Teeth per Inch (25mm): 8 • Teeth Type: HSS • Pieces in Kit: 6 • Cutting Depth metric: 13mm • Cutting Depth imperial: 1/2" Contents • 16mm • 20mm • 22mm • 25mm • 32mm • 40mm