Features: brand new and high quality Brand New and High Quality ! Motorcycle Handlebar Clamp Base with 1 inch Ball and M8 Screws. The turn of a single knob grips the adjustment arm to a rubber ball designed to dampen shock and vibration. Simply place our easy to install ball base onto the motorcycle handlebar top clamp(any bike that uses an M8 threaded bolt),and you're done. Specifications: Specifications: Material: 6061 aluminum alloy + 304 stainless steel, CNC processed, durable. Product Name: No. 8 hollow ball for head Product material: aluminum alloy + environmental for protection rubber Product set: connect the ball for head + long screw + anti-off nut Suitable models: motorcycle / bicycle / scooter, etc. Suitable equipment: mobile phone holder / camera holder (user can DIY themselves) Installation method: can be installed on the M8 screw hole (DIY installation) Note: 1.Please allow slight inaccuracy due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x 1 inch Rubber ball, 1x M8 nuts, 1x M8 x 55 bolt (1.25 thread pitch), 1x M8 x 60 bolt (1.25 thread pitch), 1x M8 x 65 bolt (1.25 thread pitch)