The Jobu Design Junior 3 Deluxe Swing Arm gives you an top mount alternative to using the quick-release clamp on the side of a gimbal head (sidemount). Designed for use with the Jobu Design Jr. 3 gimbal head, this swing arm features an integrated quick-release, which increases the swing capacity so that the maximum lens collar foot size can be taller than was previously possible.
It also makes the gimbal head lighter and it has a custom-designed fluted knob for an improved grip. The swing arm makes loading heavy lenses easier and it's better for centering lenses for panning. Vertical balance is more adjustable, as well. The overall weight of the Jr.3 gimbal head with this swing arm is 1.5 lb (680g).