• COMPATIBILITY - Available in 2 colours and diameter 30.9mm / 31.6mm. • Made TO LAST - Precision 3D forged and constructed from 7050 aerospace alloy, combining high strength, stress corrosion cracking resistance and toughness. • QUICK ACCESS - 2 sturdy and durable bolts allow quick and secure adjustment to fine-tune your fit. • LENGTH - 350mm • WEIGHT - 262g / 270g