IRWIN Tools 212 Inch Speedbor Lock N Load Quick Change Bit Holder 4935703

Product Description 1/4" quick change 2" extension, patented jaw design holds bits securely on 6 flats as well as ball detent bits, lock-n-load system for one handed quick release, 1/4" range holds insert bits, carbon steel construction sleeve & body for durability & life, fits all IRWIN Speedbor blue grooves, Speedbor max sizes: 7/16" to 1-1/4", all fastener drives, Unibit sizes: #1, #2, #10 & #12, 1/4" hole saw arbor sizes 9/16" to 1-3/16", countersinks size #4 to #12. From the Manufacturer The Irwin Tools 4935703 Speedbor 1/4-Inch Lock N' Load Quick Change Bit Holder 2-Inch Over All Length has a Carbon steel construction sleeve and body for durability and life. The Lock-n-Load system is designed for one-handed quick release to get the job done quicker. The Patented jaw design holds bits securely on 6-flatted shanks, as well as ball detent bits. The 1/4-Inch Quick Change range now holds insert bits and uses magnets for holding the bits. The 1/4-Inch Lock N' Load exntension can be use for Speedbor Blue Groove Bits (All Sizes), Speedbor Max Speed (Sizes 7/16-Inch to 1-1/4-Inch), Fastener Drive (All products), UNIBIT (Sizes #1, #2, #10, #12), 1/4 Hole Saw Arbor (Sizes 9/16-Inch to 1-3/16-Inch), and Countersinks (Sizes #4 to #12).