Features: Tightly secure two or four 3″ round struts against a vertical surface with these heavy-duty brackets Struts rest in holes of the lower bracket, then strap firmly into the adjustable upper bracket Beefy, 2″ wide nylon straps provide more surface area for an extraordinarily powerful grip SURE-GRIP technology allows for more leverage when securing for a stronger, tighter hold Lower bracket is specially-designed to support the substantial weight and withstand the repeated abuse of stowage and removal Includes Unistrut channel for quick and easy mounting Specs: Upper brackets are durable, powder-coated cast aluminum Lower bracket is durable, powder-coated steel with an extra layer of high-density polyethylene plastic Straps are all-weather, UV-resistant nylon with hook & loop pads Lower Bracket Models Available: Double 3″ Strut Bracket: Model VM-3RS-D Quadruple 3″ Strut Bracket: Model VM-3RS-Q Upper Bracket Models Available: Upper Bracket Double Model VM-EH-D Upper Bracket Quadruple Model VM-EH-Q