The DDC-50i Screw-Knob Clamp from Sunwayfoto is an aluminum Arca-type compatible clamp that fits most ball heads. It can be attached via the 3/8"-16 thread or by using the included 1/4"-20 bushing adapter.

Two safety stop grooves on the clamp help prevent your camera from accidentally falling when the clamp is loosened for adjustments. A detachable bubble level on the clamp helps ensure that the camera is level to the horizon.

This set includes MAP-01 and MAP-02 adapter bushings for mounting the receiver clamp to an Arca-type, Manfrotto, or other ball head.