The AFSB-CLAMP HANDLE kit can be used in the standard and XS series knuckles (AFSB-2, AFSB290, AFSB-2XS, AFSB-2XS90, and the AFSB-2-2XS coupler) to make quick adjustments in the positioning of the arms. Remove one of the screws of the knuckle and add the spacer and handle. Once the position is set, tighten the remaining screws. The handle and spacer can then be removed and the original screw can be re-inserted, or the handle can be left on the knuckle.