[ 57MM-77MM CLAMP ADJUSTMENT ] Compatible with accessories, like for Samsung T5/T7 SSD, smartphone, slim power bank, sound receiver within the range [ VERTICAL & HORIZONTAL INSTALLATION ] Can be fixed with cold shoe & 1/4 thread on camera, cage and tripod; or with two 1/4 screws via countersink in the horizontal direction Comes with rubber pads, anti-twist and anti-scratch design All aluminum alloy made, the holder mount is lightweight and solid Dedicated for BMPCC ( Blackmagic Design Pocket Cinema Camera ) 4K/6K/6K Pro, Z Cam