Two Cylinder Bench Bracket G-250SS: 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 (G-105) 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. 4x24x4" 9 lbs.