Spyder's Rapid Core Eject™ arbor system to remove cores without prying — drill hole, press button, pull back the hole saw, and eject the core — up to 5x faster than standard hole saw arbors. Cut at an angle, and use two adapters (second adapter sold separately) on one pilot bit to enlarge existing holes. All Hex10 Spyder hole saws fit on Spyder Rapid Core Eject™ arbor/pilot bits, or use your favorite hole saw (with a 5/8-18 thread) with the Spyder Rapid Core Eject™ arbor system. Always use a drill motor that is equipped with a support handle. Spyder Hex10 arbor and pilot bit assembly: 1/2-in hex, 1/4-in TCT drill bit, 5/8-18 thread Spyder's Rapid Core Eject™ arbor removes cores without prying, cuts at an angle, and enlarges existing holes Tungsten carbide tipped (TCT) pilot bit drills cement block, brick and other masonry materials Torque pins lock the hole saw in place - no tools are required to change out hole saws on the arbor 2-7/8-in drilling depth Always drill using a drill motor that is equipped with a support handle For use in standard rotary drilling mode Not for use in hammer or impacting drill modes Hex10 1/2-in arbor fits hole saw cups ranging in diameter from 1-1/4-in to 6-5/8-in Series Name: Rapid Core Eject Hex Size: 10 Shank Size: 1/2-in Material: Steel/Tungsten carbide Package Quantity: 1 Quick Change: Yes Shank Type: Hex Warranty: None Compatible with Hole Saw Sizes: 1-1/4-in to 7-7/8-in CA Residents: Prop 65 Warning(s): No UNSPSC: 27112800