LD-193 Bi-Metal Hole Saw Cutter 8pc Set | Wholesale Supplier

The LD-193 Bi-Metal Hole Saw Cutter 8-piece set is a professional hole cutting solution for plumbers, electricians, HVAC technicians, and general contractors who need to create clean, accurate holes through a variety of materials. Each hole saw features M42 cobalt high-speed steel teeth electron-beam welded to a flexible alloy steel backing plate, combining the cutting performance of premium HSS with the durability and flex resistance needed for demanding job site conditions. The cobalt alloy in the teeth increases hot hardness and wear resistance, allowing these hole saws to cut through hardwood, softwood, plywood, plastic, PVC, thin-gauge mild steel, aluminum, and copper without tooth stripping or premature dulling. The variable tooth pitch design reduces vibration and chatter during cutting, producing cleaner hole edges with less burr formation than constant-pitch alternatives. Each saw has a generous 38mm cutting depth that handles standard door thicknesses, double-layer drywall, and typical panel materials in a single pass. The set includes two arbors with 7/16 inch hex shanks for quick-change compatibility, plus a replaceable HSS pilot drill that centers the saw and prevents walking on smooth surfaces. All components are organized in a blow-mold plastic case with labeled foam compartments that protect the tooth edges from damage and keep accessories from being lost between jobs. Whether boring lock holes in doors, cutting pipe clearance openings, creating electrical panel knockouts, preparing HVAC duct connections, or fabricating holes in metal and wood panels, the LD-193 bi-metal hole saw set delivers professional cutting performance.