TMS Vises Bench 360&deg; Swivel Vise 3" Work Bench Clamp Tabletop Vise Rotating Jaw Head Condition : Brand new ;Color : Silver ;Material : Alloy aluminum Jaws are make by smooth metal with removable rubber,will not scratch parts being clamped by the jaws One Jaw is smooth, the other is smooth w/ perpendicular cross groove lines for holding wire and rods The ball and socket allow the jaws to be title and rotate 360,holds jaws firmly at any angle The clamp is wide enough opening to fit most any bench or table top.