The Dive Rite EPDM Hose Retainers are a must have for any stage, deco, or sidemount bottle rigging. Proven durability of EPDM rubber will stand the test of time and all diving environments. 25mm / 1\" wide Resistant to temperature, salt, chlorine, and anything else your diving environment has to offer. EPDM rubber maintains its elasticity thru extreme heat and cold Will not slip on your cylinder when a hose is being stowed or deployed Great grip on hoses and really keeps equipment tidy and streamlined A nylon pull tab makes it easy to stretch the hose retainer to stow hose even with gloves Sizing:- Small size hose retainer (GM2051-Small) will work on cylinders 5.5\"/140mm down to 4\"/100diameter Large size hose retainer (GM2051-Large) will work on 6.9\"/175mm thru 8\"/198mm diameter cylinders.