The CRL Side Window Vise holds side door glass up while you repair window mechanisms inside the door. Simply press double suction cups against one side of glass, loop over door frame and apply suction cups on other side. Large double cups assure positive suction, with no slippage or damage to window tint. Made with 14 x 2 inch (356 x 51 millimeter) strap nylon stitched onto metal plates with double suction cups. Fast and simple installation and removal.