AutoLöc’s revolutionary Electric Window Crank Switches allow you to operate your power windows with your vehicle’s original window crank handle, thus eliminating the need to mount aftermarket switches in your door panels. To operate your electric window, simply rotate the window crank up or down 15 degrees! To ensure safety, AutoLöc offers a positive dead lock stop, and return-to-center spring design which creates a heavy duty system that won’t break or snap. These switches will work with your factory window crank maintain your vehicle's traditional look. Each unit comes with 5 shaft styles: spline shaft 1 fits GM/Chev/Holden 1950 and up, spline shaft 2 fits early Ford, and most early European and Asian vehicles, spline shaft 3 fits 1931-1938 Chevy, spline shaft 4 fits 1939-1948 Chevy. Also included is the standard square shaft that fits early Dodge, Mopar and others. Custom splines are available for other applications. Ideal for all vehicles, including hot rods, custom trucks, and cars! Made out of solid billet aluminum and stainless steel fasteners. Featured on several TV shows including Monster Garage, and Pimp My Ride AutoLoc kits deliver where all others fails. Insist on the best, and insist on AutoLoc and you be glad you did.