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. Includes upper jaw plates, 5 pins, base, 1 plastic hex key, wrench and 30pc attachment set G03-520.