Buy on Amazon : http://www.amazon.com/gp/product/B000XB9GJM?tag=scratchandsti-20 <br /> <br />Glidecam Smooth Shooter Support Arm and Vest for use with Glidecam 2000 Pro Glidecam 4000 Pro <br /> <br />The Support Arm can be setup and used in either a One-Spring Mode or a Two-Spring Mode <br />In the One-Spring Mode the Support Arm can hold a total combined camera and hand-held stabilizer weight of 9 pounds <br />In the Two-Spring Mode the Support Arm can hold a total combined camera and hand-held stabilizer weight of 18 pounds
