The M18 FUEL™ 1/4" Rivet Tool with ONE-KEY™ Jaw Set boasts a premium steel alloy 3-jaw design, increasing jaw durability and life whilst decreasing the number of jaw replacements. The jaws can be easily swapped in and out of the tool and install 3/16" (4.76 mm), 7/32" (5.56 mm), 1/4" (6.35 mm) and 9/32" (7.14 mm) rivets. Compatible with the MILWAUKEE® M18 FUEL™ 1/4" Rivet Tool with ONE-KEY™ (M18FPRT, sold separately).