Features: The double ball 17mm to 17mm aluminum extension rod provides secure mounting for positioning devices, smartphones, and action cameras on motorcycles, featuring 70mm length and universally compatibility with 17mm rotating ball mounts. Crafted from lightweight yet durability aluminum, this extension bracket boasts a reinforced 1/4" through hole design and double spherical joints for adjustable angles and vibrations resistant stability during rides. Ideal for riders, outdoor enthusiasts, and content creators needing reliabled multi device mounting solution for navigation, recording, or live streaming adventures. Effortlessly installs on motorcycle handlebars, car dashboards, desktop setups, or vlog to stabilize devices across bumpy terrains, daily commutes, or indoor streaming. Engineered with precise machined 17mm ball heads and anti slip clamps, this versatile adapter seamlessly integrates with existing motorcycle phone mounts and action camera accessories for enhanced operational flexibility. Specifications: Component： aluminum alloy Length: 70mm/2.76in Ball head diameter: 17mm Color: black, silver Package Includes: 1pc 1/4 female to female adapter 2pcs 1/4 male to 17mm ball heads note: Please allow 1-2cm errors due to manual measurement. Pictures may not reflect actual color due to different monitors.