Klein's Bi-Metal Hole Saws are optimized for cutting steel. The blades provide the fastest, most consistent and longest lasting cutting on the market today. Heavy-duty construction includes thicker 5 mil back plates to stand up to abuse.Features Optimized for cutting steel including stainless steel Long lasting, fast cutting blade Heavy-duty steel construction includes a thick back plate to withstand abuse Cuts precise holes in stainless steel and mild steel, drywall, ceiling tile, laminates, wood and plastic Use with Klein Tools Arbor (Cat. No. 31905). Sold separately Base with flat edges for easy removal from arbor Multiple slots provide different leverage points to easily remove slugs Warnings Always wear approved eye protection. Read and follow safety instructions in power tool owners manual. Never use on or near live electrical circuits. Size: 7/8 in (2.2 cm) Compatible Arbor: 31905 Depth: 1 in Height: 1 in Width: 1 in Weight: 0.060 lbs Hole Diameter: 7/8 in (2.2 cm) Pipe Entrance Size: 0.5 in (1.3 cm) Pipe Tap Size: 0.75 in (1.9 cm) Material: Bi-Metal, Steel Country of Origin: China DownloadsSpec SheetVideo Download