Matthews Quacker Clamp

Ercole M11-067 Spring Clamp with 1/4″-20 male thread.

Manfrotto 386B-1 Clamp Nano 4kg payload Diameter 13-35mm.

The Rock Solid Pony “A” Spring Clamp 1″ in non-reflective black with coated handle and Tip features spring-operated jaws that hold a variety of material efficiently and securely.