Use this Snap-Back arbor with hole saws from 1-1/4 to 6 in. dia. Easy-to-install design threads directly into hole saws, so no tools and no adapter are needed. Just install it with a simple pull-twist and snap, which allows it to attach to the hole saw. Designed to drive off pins and not threads, this arbor allows users to quickly disengage the arbor from the hole saw to get into a new size or to get the material out of the inside of the hole saw. Plumbers, electricians, HVAC workers, contractors and anyone working with hole saws can be more productive on the jobsite by using this arbor to quickly and easily remove hole saws to switch out sizes or to help eject plugs.