Hejnar Photo 3.25 Inch Jaw Length Clamp for Arca Swiss type Plates and Mounts. Made in U.S.A Standard 3.25 jaw length clamp with long black knob Weigth 4.7oz (135g) Precision C.N.C. machined from 6061-T6 Aluminium. Stainless steel hardware. Black hard coat anodized surface.