A Compact Aluminum Mount Designed For Serious Riders, The Pro Handlebar/ Seatpost/Pole Mount Fits 25 To 30Mm Diameter Tubes. Lock Down Securely. For Unlimited Capture Options. If Your Best Days Are Spent On Two Wheels, Look No Further—This Mount Is Engineered To Withstand Whatever Vibes The Road, Mountain Or Dirt Can Dish Out. Item Features: Light And Durable Aluminum Construction Position Your Action Camera In The Handlebar, Seatpost And Pole Easy To Install And Quick Remove Secures To 25 To 30Mm Diameter Tubes To Fit: For Gopro/Xiaoyi/Sjcam Material: Abs+Aluminum Alloy Net Weight: 70G Item Included: 1X Three-Prong Buckle+Thumbscrew 1X Handlebar Mount.