The IRWIN SPEEDBOR Lock-n-Load Quick Change Extension Bit Holder is built to last with a durable carbon steel sleeve for a long life. The Lock-n-Load system creates a quick, one-handed release system while the patented jaw design holds bits securely on 6-flatted shanks and well as ball detent bits. Magnetized to keep bits from becoming lost during changes, the 1/4" range also holds insert bits.
The Irwin Tools 4935705 Speedbor 1/4-Inch Lock N' Load Quick Change Bit Holder 12-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).