New KAMERAR stainless steel 11" Stainless Tough Friction Arm for DSLR cage rig stabilizer video Features: Each side provides 1/4-20 male threaded stud with knurled textured locking discs Center Joint with thrust bearing locking knob Stainless Steel Ball Joints with Micro Textured Surface 14-Day Money Back Guarantee. For more information please check in http://kamerar.com/pages/about-us