HTM QUICK CLAMP WORKS W/ BOW VISE & 3RD AXIS VISE The QC-2020 is solely designed for both bow vises, the HTM 3rd Axis bow vise and the new HTM BVS-2020 Vise. This clamp gives you a 3 3/8� limpades. It will attach to the limbs of any bow quickly thus ensuring no harm comes to the bow. The quick clamp is easy to attach to both HTM Bow vises. The QC-2020 is made of all high-grade aluminum for strength and lightness.