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Snap-Lock hole saw mandrel with 3/8" hex arbor, 4" pilot bit, 1/2" adapter nut, and 5/8" adapter nut. Diablo's hole sawsystem and mandrel design simplify the attachment process for fast and efficient hole saw mounting. Features 2-3/8" cutting depth for deeper holes in one pass, tool-free plug ejection, Perma-SHIELD coating for reduced friction and heat, and variable tooth design. One-size-fits-all mandrel fits all Diablo hole saws.