The Mares XR Smith Stage System 6 Inch is a complete stage cylinder strap system for smaller cylinders like 7L or 40 cu ft so you can carry them easily in & out of the water as well as manage your hose routing. - 6” stainless cylinder clamp with PVC sleeve- 6” cord with all black tube, 27 cm, w/bolt snaps S.S. 316 size 120 mm- 6” (17 cm) 2 rubber straps with webbing puller