Ronlok Features: Made of aluminum alloy, , and , can be rotated 360 degrees and can rotate about 80 degrees in horizontal direction, has more freedom to adjust the flash direction. Multi-position free connection and fixation, have more freedom to adjust the flash direction. Multiple expansion screw holes 1/4 3/8, meet the installation requirements of customers. Use: the ball clamp is used to attach 2, base adapters and flashes to each other, the clamp mount for 1--ball arms for Hero 9 8 7 6 5 4 3+ 3 4k action camera accessories and others. Ergonomic design: Ergonomic twist handle design, naturally suitable for fingers and made of resin to improve usability, with lower power consumption, easy to lose, adjust the relative of the joint arms, clamp the ball joints. Have a higher degree of freedom to adjust the flash direction. A wide of strong practicality is a great for photography enthusiasts. Size: 42 x 70 x 24.5 mm Weight: . 60g/pcs Compatible action camera : for 4k , camera Colour: black. Material: aluminium alloy. Package Content: 4 x diving brackets. Only the above package content, other products are not included. Note: Due to the light reflection and monitor settings, the colour of the item in the photos may be slightly different. The allowed measurement error is +/- 1-3 cm.