The custom jaws are extra tall, with steep angles for easier access to your work. The end of the vise is beveled for extra relief, too. The 2"-wide steel jaws are hardened for durability and specially undercut to stay parallel under pressure, holding the nut or saddle uniformly without slippage.
For other jobs, the jaws open to 2-7/16", making it versatile for gripping all kinds of small work. This is a well-made, heavy little portable steel vise with a 2" x 5-5/8" footprint; you can clamp it to the edge of your workbench, or into your larger shop vise.