Tried and true EPDM hose retainers with modern twist.The Dive Rite EPDM Hose Retainers are a must have for any stage, deco, or sidemount bottle rigging. Using the proven durability of EPDM rubber, these 1" wide hose retainers will withstand the test of time and diving environments with their resistance to temperature, salt, chlorine, and anything else your diving environment has to offer. EPDM rubber maintains its elasticity thru extreme heat and cold, and will not slip on your cylinder when a hose is being stowed or deployed. A nylon pull tab makes it easy to stretch the hose retainer, even with gloves. Small size hose retainer (GM2051-Small) will work on cylinders 5.5" down to 4" diameter, large size hose retainer (GM2051-Large) will work on 6.9" thru 8" diameter cylinders.TECHNICAL DETAILS EPDM rubber 1? (2.54cm) wide band 2? (5.08cm) Nylon pull tab Large: 1.2 oz (34 g) Small: 1 oz (28.35 g)In the package: 1 EPDM Band of your choice.