Quickly change between 1/4" and 5/16" hex sizes with Malco's C-RHEX dual-sided magnetic hex drivers. The reversible hex socket fits over a 1/4" magnet-tipped, ball locking hex shaft, and can be quickly reversed to change sizes. Eliminate troublesome buildup of metal shavings in the hex tip with the "Easy Clean Magnet". Just swipe with a glove or shop towel to clear any metal shavings.