EM-Tec CVC2 single large 120 degrees groove vise jaw, 12x40x6mm.Em-Tec CVC2 optional single large 120° groove vise jaw to clamp larger round objects. Can be used instead of the standard jaw vise. If needed, two can be mounted op top of each other to increase the vise jaw height to 24mm. Size of the EM-Tec CVC2 single large 120° groove vise jaw is 12x40x6mm.