ITEM NAME:Aluminum Small Jewelers Hobby Clamp On Table Bench Vise Mini Tool Intriguing.Vice Jaw Width: 40mm/1.57" (Approx.). Max Jaw Opening: 30mm/1.18" (Approx.). Features: Mini Tool, for Jewelers Hobby. Type: Vice Clamp. 1 x Vice Clamp. Max Size of Fixed Chuck: 35mm/1.38" (Approx.). Cast aluminum body, steel screw and handle, high strength and light weight.