Quik-Lok™ universal extension works with 7/16 inch shanks and is 5-1/2 inches long.
The 7/16 In. universal Quik-Lok™ extension has an innovative design that fits all 7/16 In. shanks - with or without a power-groove. The uniques design requires no tools to change out bits, making it fast and efficient. These new extensions are impact rated for maximum durability.