Opteka CBW-5 Extra Chrome Counterbalance Weights for SteadyVid EX Video Stabilizer (1/4" Threads) Weight: Two 6.2 oz (175g) weights / 12.4 oz (350g) total weight Compatibility: Opteka SteadyVid EX (1/4" screw / dual threaded) Polished Chrome 1 Year warranty