FLYCAM Arm Wrist Brace Support for Video DSLR Handheld Camera Stabilizer - Flycam Steadycam, Glidecam etc. (FLCM-AB) COMFORTABLE AND SECURE CAMERA ARM SUPPORT for long day shooting with multiple adjustment handle positions. DESIGNED TO EVENLY DISTRIBUTE WEIGHT over the entire forearm which reduces arm fatigue and strain OUTER DIA of Camera Arm mount is: 18.44mm and 21.70mm ADDITIONAL CAMERA SUPPORT and control with Instant 'On-Off' attachment High on Quality, Low on Cost