MILWAUKEE 7/16"" LARGE QUICK CHANGE ARBOR - 49-56-7055 MILWAUKEE HOLE SAW ARBORS ARE MADE FROM HARDENED CARBON STEEL AND ALLOY STEEL FOR GREATER DURABILITY. THE 49-56-7055 FEATURES A 7/16 IN. HEX SHANK WHICH CAN BE USED WITH ANY 7/16 IN. EXTENSION. THE 49-56-7055 ALSO FEATURES A HOLLOW SHANK TO ALLOW ACCESS TO DRIVE OUT STUCK PILOT BITS. UL STYLE""MARGIN-TOP0PX; PADDING-TOP 5PX; PADDING-BOTTOM 5PX;"" TOOL-FREE OPERATION UNIVERSAL QUICK CHANGE WITH ALL BRANDS OF HOLE SAWS NO ADAPTERS REQUIRED DURABLE HARDENED STEEL CONSTRUCTION FITS ALL HOLE SAWS 1-1/4 IN. AND LARGER FITS ALL HOLE SAWS 1-1/4 IN. AND LARGER & FITS ALL DRILL CHUCKS 1/2 IN. AND LARGER