Add a unique accent to your motorcycle with the Revolver Seat Mount Knob. Seat mount knobs replace the 1/4-20 Phillips head screw on the seat tang. Includes shoulder washers, rubber o-rings, and 6 .22 case. (Note: It must be glued to prevent the casing from vibrating. Silicone or super glue drops work) Also available in polished stainless steel #SMK-REV-PS.