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. 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. Optimized for cutting steel including stainless steel Cuts precise holes in stainless steel and mild steel, drywall, ceiling tile, laminates, wood and plastic Long lasting, fast cutting blade Multiple slots provide different leverage points to easily remove slugs Heavy-duty steel construction includes a thick back plate to withstand abuse 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.