The Proaim 5.7'' Riser is specially made for Proaim Supreme Camera Dolly. It is designed to use when you need variable height for your camera setup. It can be stacked with additional risers to acquire the desired height. The Riser features a 3/8” free hole on top side and a 3/8" thread on bottom side. The riser adapts flat base fluid head for camera mounting. It is made from high-grade CNC machined aluminum for strength and stability. SPECS Construction: High-grade CNC Aluminum Height: 5.7" Surface Area: 5" Top Side: 3/8"-16 free hole Bottom Side: 3/8"-16 thread WHAT'S IN THE BOX Proaim 5.7'' Riser for Supreme Camera Dolly