Shape FS7 V-LOCK QUICK RELEASE BASEPLATE: Sturdy and lightweight professional camera support system, Designed with ARRI rosette sockets, 15mm (8) rods at the front and (4) rods at the back, Compatible with all 15mm rod systems and optional 15mm studio or 19mm brackets, V-lock delta adapter at the bottom of base plate, Removable Velcro shoulder pad, Length-adjustable rods using red ratchet knobs on ROD BLOCs, Height-adjustable sliding ROD BLOC using black knob, Made of solid anodized aluminum.