Our quick-release billet mounting brackets are accepted by most race-sanctioning bodies and clubs. Flat surface mounts and dual clamp roll bar mounts combine with band clamps for 2.5 lb. fire extinguishers. Band clamps for 1.0 and 1.4 lb. fire extinguishers combine with flat surface mounts and single clamp roll bar mounts. Note: Clamps and mounts must be used together. First, choose the correct band clamp size, then choose a flat surface or a roll bar mount.