Name:Stand fixed ball head Material:rubber + stainless steel Thread direction:right-hand thread Package:Bagged Package size:10.8x6.7x2.6cm/4.25x2.64x1.02in Net weight:40g Use scenario:fixed in the car reserved for the rearview mirror mounting holes Motorcycle Handlebar Mount Rearview Mirror Ball Clamp Base Stainless Steel Phone Holder Bolt Screw Motorcycles Accessories Feature: Easy and convenient installation, simple to get started and easy to use. Choose rubber and stainless steel material, wind and rain, durable and rust-proof. Anti-slip and anti-vibration, rough surface particles, increase the contact area, not afraid of shaking. CNC precision machining screw part is made of stainless steel, CNC precision machining, safe and durable. Nut counter force design, the position of the nut can be adjusted according to the depth of the screw hole, the ball head is firmly fixed. Specification: Name: Stand fixed ball head Material: rubber + stainless steel Size: M8: Ball head diameter: 25mm/0.98in, thread length: about 11mm/0.43in, pitch: 1.25mm/0.05in, bottom diameter: 8mm/0.31in, total length: 52mm/0.2in M10: Ball head diameter: 25mm/0.98in, thread length: about 11mm/0.43in, pitch: 1.25mm/0.05in, bottom diameter: 10mm/0.04in, total length: 52mm/0.2in Thread direction: right-hand thread Package: Bagged Package size: 10.8x6.7x2.6cm/4.25x2.64x1.02in Net weight: 40g Use scenario: fixed in the car reserved for the rearview mirror mounting holes Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 X Motorcycle Ball Clamp Base 1.There is no limited stock to fulfill the orders on a daily basis. 2.For USA/CA /RU the shipping is quickly. 3.Priority delivery,fast delivery in 48 hours. 4.No invoice or receip or promotional materials included.