Touch and Go System is an industry standard, quick release system compatible with OConnor 120mm, Sachtler, and Ronford Baker. Our version is up to 1/3 lighter than other systems due to the recess designs on the receiver and plate. Once the plate is attached to the camera by included 3/8-16 screws, simply drop it into the base and the plate will snap into locked mode. Push the lever further to clamp the Quick Release Plate in place. To remove, pull the lever and push down on side release button at the same time.Touch and Go System is compatible with:-120mm O'Connor Euro-Sachtler 35-Ronford Baker RBQ SpecificationsComplete System:Weight: 510g (1.12 lbs)Dimensions: 184.2 x 91.44 x 25.4 mm (7.25 x 3.6 x 1 in)