This Handcrank Extension is for the PowerPlus wheel when used on commercial machines (i.e. the Professional, Big n Tall and the Sailrite 111). The Sailrite handcrank was originally designed to be attached directly to the PowerPlus wheel itself but for full size industrial machines it is desirable to have even more leverage --- thus the extension. This item is the correct add-on for the item no. 100847 on the Sailrite Professional and Sailrite 111.
