Engineered for heavy-duty cutting, the 1-3/8 in. (35 mm) Metal Cutting Carbide Hole Saw is ideal for stainless steel and other tough metals. The optimized carbide tooth layout and enhanced pilot bit provide fast drilling and added life. It has a raised shoulder to prevent breakthroughs and an ejection spring for efficiently removing plugs. Hardened backing plates help eliminate thread stripping, and a deep-cut design cuts twice the material in a single pass.