【Main Parameters】- Ball Diameter:130mm; Jaw Width:64mm; Jaw Height:38mm; Max. Opening: 76 mm. EXCELLENT QUALITY Complete standard block ball vice engraving tool:This block is made of solid galvanized steel, comes with a brake that allows you to control the rotation resistance. SELF CENTRING JAW SYSTEM The mini ball vise has a self-centering jaw system for stone setting, small engraving, and other precision work. 【Rotational Braking System】The internal rotation braking system allows the user to freely lock the amount of rotation resistance. There is a double ball bearing system for smooth rotation without loosening or wear inside. Wide application: the engraving ball vice is perfect for stone setting, small engravings and other precision work. Designed for a unique combination of solid work support in a small and handy size. Its low profile is suitable for microscope work. › See more product details Model: Size: Color: 5" Ball Vise