Desmond DMH-2 & 50mm DAC-X1 Clamp Tripod Tilt Head Arca /RRS Compatible Oversized Knob Modular design with both top and bottom Arca / Really Right Stuff compatible dovetails. Fully compatible with RRS Lever Clamps. Oversized metal comfort grip knob. No plastic or rubber parts. Max load: 10kg (22 lbs). Includes 50mm Desmond Dac-X1 Arca compatible Clamp.