1Balance Adjustment: In addition to sliding left and right on the rail to keep the camera balanced, you can also slide back and forth to find the balance point of your equipment. 2Cold Shoe Port: The top of the handle is equipped with a cold shoe seat, which can be installed with microphones, shooting extend mount arm and other lighting accessories. 3Rich Expansion: Enough 1/4 inch and 3/8 inch holes for installing additional accessories such as ball joints, rod clips, shooting extend mount arm, etc. 4Handle Grip for Camera Cage: Sliding rail quick release top handle is compatible with camera cage, ideal accessory for outdoor mobile shooting. 5Aluminum Alloy: The camera cage handle is made of aluminum alloy, so you don't have to worry about sweating or too slippery in wet weather to provide a comfortable grip.1 x Handle1 x Support2 x Wrench2 x Screw