Its 3-1/4" radius gives an incredible 6-1/2" range of adjustment.
Its gently curved shape keeps the peg tucked in toward the center line of the bike for maximum comfort.
Sold as a pair.
Tech tip: When installing any footpeg, footboard or highway peg combination, always verify all fasteners are tight and secure - even those you don't adjust. Kuryakyn also recommends periodically checking to make sure all fasteners remain tight.