(There are no jaw pins included). It is quite simple to assemble, Ask if you have questions about assembly.Massive ball-and-roller bearing system provides smooth, high-quality rotation. Internal rotational brake system allows you to customize resistance from free to locked. Machined from solid stainless steel for durability and longevity. The item "GRS MagnaBlock large ball rotating bench engraving vise 003-021" is in sale since Sunday, January 19, 2020. This item is in the category "Jewelry & Watches\Jewelry Design & Repair\Jewelry Tools\Engraving Tools". The seller is "ann4570" and is located in Grantsburg, Wisconsin. This item can be shipped to United States.