This vise has four positive locking angle adjustments for stable tying with 360idegree rotation and is fully machined from high quality stainless steel and aluminum. The jaws have various groove sizes allowing you to clamp down on a wide range of hook sizes securely. Larger to smaller serrated grooves from the back to the front tip of the jaws allows for larger to smaller hooks to be securely locked in. SPECIFY: Pedestal-Base or C-Clamp. 