Spyder 600833 4" Deep Cut Hole Saw 6-1/4" Depth

When you're running electrical conduit through double-stud walls, cutting HVAC collar openings through fiber cement, or punching drain holes through brick — a standard 2" bi-metal hole saw is a liability. The Spyder 600833 Deep Cut Hole Saw is built for exactly those jobs: a 4-inch diameter with 6-1/4 inches of cutting depth means you're clearing stacked framing lumber, thick CMU faces, or layered subfloor material in a single pass. The tungsten carbide-tipped teeth are the enabling technology here — TCT holds its edge in abrasive materials like fiber cement, MDF, and masonry where bi-metal teeth round off after a handful of holes. Spyder's claim of up to 10x more holes than conventional bi-metal is aggressive but directionally accurate for abrasive material work.

The wide relief slots cut into the saw body aren't cosmetic — in a 6-inch deep cut, waste material has nowhere to go without active venting, and debris packing causes heat buildup, speed loss, and binding. The slots keep the cut moving. For material compatibility: wood, MDF, plastic, block, brick, fiber cement, and wall tile up to hardness 6 are all in-spec. Hardened porcelain and steel are not. Drive this saw with a high-torque 1/2" drill for wood applications; upgrade to a corded drill or rotary hammer for brick and block to maintain consistent RPM under load. Note that the arbor is sold separately — confirm Spyder arbor compatibility before ordering.