From Manufacturer
Capable of exerting very strong clamping force, the Savior Clamp Mini from 9.SOLUTIONS has jaws that open up to 1.18" to hold gear weighing up to 66 lb. The jaws themselves were designed with peaks and valleys to accommodate as many odd shapes as possible whether they're round, square diamond or irregularly shaped. The clamp has one 3/8"-16 female thread and two 1/4"-20 female threads to allow for mounting of additional equipment.