The 7mm spindle shaft is square at housing and flattens toward the end. The flat end fits into the forked connector. Spindle length varies by window application. We are an Authorized Distributor for Andersen, Larson, Marvin, Pella, GU Ferco, Hoppe, Emtek, Roto, Milgard, Peachtree, Weathershield, and many more.
eBay