This base mount is for REC-MOUNT25 short joint models and has an approximately 25 mm ball. It is sold on its own and requires a separately sold JA-part holder or attachment; it cannot be used alone.
Features
Base mount made of 6061 aluminum.
Fits 31.8 mm handlebars. Rubber shims for 28.6 mm, 25.4 mm, and 22.2 mm handlebars are included.
Use with fall-prevention measures in place. The user is responsible for taking those measures.