The MagnaBlock provides additional stability while using power tools, chasing hammers, and similar equipment. A massive ball-and-roller bearing system allows smooth rotation without wear or looseness. The internal rotational brake system allows the user to easily adjust rotational resistance. Machined from solid stainless steel with a satin finish and black jaws to reduce glare and eye strain. Your purchase includes the MagnaBlock Vise, upper jaw plates, 5 pins, base, 1 plastic hex key, wrench, and attachment set.