Hole Saw Arbor, 3/8 Quick Release Shank, 5/8-18 UNF and M16 | Dual adapters fit 1-3/8 to 7-7/8 in bi-metal hole saws, with quick release, slug ejection and attached pilot bit

Two Thread Adapters Included: Includes one 5/8"-18 UNF adapter and one M16 metric thread adapter for compatible bi-metal hole saws. Confirm your hole saw thread and mounting structure before ordering. Wide Size Compatibility: Designed for compatible 1-3/8" to 7-7/8" (35-200 mm) bi-metal hole saws, covering multiple hole-cutting sizes for workshop, installation, maintenance and DIY projects. Quick Release and Slug Ejection: The rotating quick-release structure helps connect and release the hole saw with less setup time while making the cut plug easier to remove after drilling. Attached Pilot Drill Bit: The integrated pilot drill bit helps locate the center and reduce wandering when starting a hole. The pilot bit is permanently attached and is not supplied as a separate replaceable component. Attached Pilot Bit: The pilot drill bit is attached to the hex shank and is not a separate replaceable part. Use proper speed and pressure for each material.