Product Info Catalog Tools Power Drill, Bits & Accessories Hole-Saw Mandrel, Quick-Change, 7/16-In. Hole-Saw Mandrel, Quick-Change, 7/16-In. Request a Quote UPC: 52088053270 SKU: 752980 Model Number: 752980 Master mechanic, 7/16" quick change hole saw mandrel, for 1-1/4" - 6" bi-metal hole saws.