Gibraltar GCS150C Chrome Series 40-Inch Curved Rack Side with Quick Release T Clamps & RMAAsThe Gibraltar GCS150C is a chromed contoured extension made to expand your GCS300C rack. This 40 inch rack stands 30" tall and includes a hinged memory lock, right angle clamp, a quick release T leg and more. Gibraltar drum rack packages now make it easier to find the right combination for your needs. (1) 40 inch curved horizontal bar (1) GCHML hinged memory lock (1) 30 inch vertical bar with RMAA mounting attachment (1) GCRA chrome right angle clamp