ATOM BIKES HARDCORE HARDWARE "MARTINI POST". 25.2 mm diameter x 8" length (200 mm)Elite BMX racing post made with construction grade hex-hollow aluminum tubing.Tired of bending your seat post? Have no worries, these are guaranteed for life. Hand polished to a high luster. Weighs 8 oz. Perfect for abusive or heavy riders. Ride with confidence and style. Limited Production. Only 14 were made.