Pella Truth SkyLight Off White Hex Operator Adapter 20550 Clerestory Pole Crank
This adaptor easily fits over the spline of the window operator and is used in conjunction with Truth's clerestory pole crank.As an alternative to Truth's hook pole and universal joint assembly.
Overall Length 1-3/16"Outer dia. 3/4"
Internal Spline side is 11/32"
Internal Depth 23/32"
Color is Off White or Light Putty
Priced and sold each.