These casement operator tee crank handles are constructed of zinc diecast and come in a painted finish. They a low-profile style crank design that make them the crank of choice where traditional long-arm cranks interfere with window coverings. The plastic inserts included with these tee handles fit various spline diameters of the following sizes: 9/32 inch, 5/16 inch, 3/8 inch, 11/32 inch and 3/8 inch special. Installation Tip: Once the correct insert has been mounted onto the spline, be sure to align the set screw of the tee handle to the round opening on the side of the plastic insert to allow the set screw to lock onto the metal spline, and not into the plastic insert.
