Lenox Speed Slot 5 In. Bi-Metal Hole Saw Devcon Thumbscrew provides user with a

Thumbscrew provides user with a more convenient geometry for hand force

Tighten screw until nut splits

Moisture resistant

without the need to switch between utensils

Great for concrete and carpet floors

Lenox Speed Slot 5 In. Bi-Metal Hole Saw Devcon Thumbscrew provides user with aM2 high speed steel cutting edge welded to a shatter resistant spring steel back. SPEED SLOT features a staircase designfor easy plug removal. 4 6 Vari Tooth design for aggressive cutting action and reduced vibration. 3 16" thick heavy duty backing plate is more durable than stamped backing cups and eliminates need for torque driving plate. Use for heavy duty cutting in stainless and mild steel, cast iron, copper, brass, aluminum, plastics, wood, and