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.
- Lock-n-load system allows for one handed quick release
- Carbon steel construction sleeve and body for durability and log tool life
- Quick change range now holds insert bits; magnetic, assists in holding bits
- Patented jaw design holds bits securely on 6 flattened shanks, as well as ball detent bits