Metallurgical Mount Holder, 1½” and 40mm, 3.2mm (1⁄8”) x8mm (D)
This set screw vice which is made from machined aluminum with stainless steel allen set screws has an open slot that is 10 mm (.394") wide x 5 mm (.197") deep. It measures 25 mm (1") dia. x 17.5 mm (0.69") high.