RAM Mounts B-354U Track-Ball with T-Bolt Attachment for Tough Track Platform Equip a camera or other device to a hard case or other large flat surface with a RAM system that includes a Track-Ball with T-Bolt attachment mount. Easy to mount to a Tough Track platform, this base allows fitment of a double socket RAM arm and device adapters to securely hold your gear where you need it. Mount a RAM Track-Ball to your motorcycle luggage or other flat surface and start recording your adventures today. Features: High strength composite construction T-Bolt Dimensions 0.48in x 0.95in 1in B sized mounting ball Requires Tough-Track base platform for mounting Includes: Track-Ball only Track platform not included