Southwire 2 1 2 in Carbide Tipped Non Arbored Hole Saw Lawn Mower Blades 250 Rise 4 Material Steel 250 Rise 4 Material Steel Receiver Opening (in 3 cc professional grade engine delivers 756 CFM and 234 MPH at the pipe delivering a balanced combination of both air speed and air volume Type Hole saw Blade Material Carbide tipped Set Individual Individual Adjustable Yes Hole Saw Diameter 2 1 2 in Arbored Non Arbored Non arbored Package Quantity 1 For Use on Drywall Yes For Use on Fiberglass No For Use on Granite No For Use on Metal No For Use on Mineral Fiber No For Use on PVC No For Use on Tile No For Use on Wood Yes CA Residents: Prop 65 Warning(s) No UNSPSC 27112800 to 7 Ft Black oxide blades cut cleanly through drywall and ceiling tiles Hex key adjustment allows for easy of blade Disc shaped mandrel balances blades for stable and clean cuts