H3R Performance Billet Mounting Accessories are stylish and versatile. Band clamps fit 2.6'' (1.0/1.4lb bottles) or 3.0'' (2.5lb bottles) diameter fire extinguishers, and can be combined with the flat surface mount or either of the two roll bar mounts. You must use a band clamp and a flat or roll bar mount to complete the mounting system. Available in polished or brushed finishes.