It could attach monitor via the 1/4'' screw on the one end and attach accessories with 1/4''-20 threaded holes on the other end, like cage, NATO Rail 1973, 15mm Rod 1182 and Quick Release Rod Clamp 1976 etc. Mounted with 1/4'' screw is a rubber cushion which could prevent the scratches of monitor and help to lock the monitor tighter.
1 x 11 inch magic Arm
Product Dimensions: 86 x 60 x 25mm
Net Weight: 213g
Package Size: 180 x 100 x 40mm
Material(s): Aluminum Alloy/Stainless Steel/ Free-cutting Steel