The Truth 11329 Folding Crank Handle is constructed of die cast metal and plastic. The handle is metal, but the part the mounts on the window spline or shaft is plastic. The handle tilts down to clear blinds and is held in place by a small flat head screw. The only issue we see with this handle is the plastic piece that mounts on the shaft of the operator, this some times strips out, but usually only in rental properties. This handle will work on all Truth Crank Operators, and has an 11/32" spline.