Milwaukee 48-28-1040 Drill Bit Extension, 7/16 in Shank, Hex Shank, 12 in L, Steel

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 unique design requires no tools to change out bits, making it fast and efficient. These new extensions are impact rated for maximum durability.