HTS 104J3 3" Universal Aluminum Swivel Table Vise Jaws are 3" x 3/4" / 79mm x 17mm with a 2" / 51mm opening Ball and socket joint lets you work at nearly any angle Can be mounted to any surface up to 2-1/8" / 54mm thick Rubber on the jaws can be removed to reveal a cross pattern for use on wire/rods Rubber jaws protect against unwanted scratching/marring