The SRB-40 Quick Release Plate Clamp from FLM is a 1.5" open channel clamp that accepts most Arca-type quick release plates. The clamp features a knurled locking knob, a 3/8"-16 bottom mounting thread, and a plate restraining pin. The easiest solution for locking camera plates securely in place with the tried-and-tested clamping system. A locking pin ensures that the QRP plate cannot slip out of the base when opened. Thanks to the UniQ/C adaptation, the base is compatible with camera plates of other UniQ/C conform manufacturers. This plate clamp is also Arca-compatible.