RH 12-1/8" Hinge Arm Assembly, Pella

Looking for slide rollers (part name?) for Pella casement windows that are probably 30 years old. The windows are wood with a vinyl clad exterior. This part slides along with top and bottom window sash when you crank the window open. Any help is appreciated.

Please identifiy this operator. I look like the slide on the bottom hing is broken. I have added a photo of the top hinge Thanks

I need to replace the entire hardware on this old window. It opens on the left but the hinges are on the right (looking out the window). The handles keep getting stripped. I can only find a marking on the handle cover plate it says 4 LH; and then another under one of the arms that looks like a WL. ... (cont.)

I am in need of replacement parts for two Pella Casement windows circa 1980's. The windows are 27" X 51"and have removable storms. They are part of a bay window with one opening to the right and one opening to the left. Any help in finding propper replacement pieces will be greatly appreciated.Tha ... (cont.)

the single swing arm in the first photo, the crank is present. The crank arm is present. It's the swing arm or the single straight arm that we're trying to find