Our folding foot pegs fit our mounts and also traditional factory Harley mounts that use a "D" spring washer. These folding foot pegs attach with a 5/16'' bolt. They are 1-1/4'' diameter and about 5'' long from the pivot hole to the end. These folding foot pegs are machined from solid 360 Brass. All Accutronix Motorcycle Products are proudly made in Phoenix Arizona, USA