Two Cylinder Bench Bracket: This bench mount double cylinder bracket uses dual mounting posts with swivel feet and non-slip pads to clamp to bench or table tops from 3/8 inch to 1 3/4 inch thick. Standard strap sets and optional chain sets secure cylinders 4 to 12 inch diameter. Especially useful where walls are not accessible to attach brackets or when temporary, safe cylinder supports are required. 11 Gauge Gray powder coated Hot Rolled steel. UPS shippable. Dimensions (WxDxH): 24" x 4.25" x 4.25". 11 lbs.