The MILWAUKEE M18 FUEL 1/4'' Blind Rivet Tool w/ ONE-KEY Non-Retention Nose Piece 4-Pack includes 3/16'', 7/32'', 1/4'' and 9/32'' sizes. These rivet gun extension nosepieces are easily stored on the M18 FUEL 1/4'' Blind Rivet Tool w/ ONE-KEY. They're laser-etched with the diameter size in English and metric units. Compatible with the 2660 M18 FUEL 1/4'' Blind Rivet Tool w/ ONE-KEY (sold separately). Compatible with the M18 FUEL 1/4 Includes 3/16 Provides easier spent mandrel travel into the mandrel collector Easy storage on the 2660 M18 FUEL 1/4in. Blind Rivet Tool w/ ONE-KEY Easy nose piece swapping Laser etched with the diameter size in English units as well as metric