Features: New quality, firm and stable, multiple brackets are fixed and matched, all aluminum alloy material is not easy to damage Three fixing methods: rearview mirror holder bracket, handlebar bracket, rearview mirror rod bracket, adapt to your different sizes The film is non-slip and shockproof, stable shooting, no shaking 360° arbitrary adjustment, double ball head design, more flexible Comes with standard 1/4 inch screws, suitable for most cameras, such as digital card cameras, miniature single cameras, SLR cameras, sports cameras, CONTOUR sports cameras, etc. Type 1 (rearview mirror bracket) Specification: Total length: 16.3cm Connecting rod length: 9.5cm Interface diameter: 10mm Material: aluminum alloy Type 2 (Handlebar Mounting Bracket) Specification: Total length: 19cm Connecting rod length: 9.5cm Interface diameter: 15-35mm Material: aluminum alloy Type 3 (rearview mirror - pole bracket) Specification: Total length: 16.5cm Connecting rod length: 9cm Interface diameter: 9-16mm Material: aluminum alloy Note: No retail package. Transition: 1cm = 10mm = 0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x holder (optional)