Window hardware

Looking to replace the window cranks on a few windows in the house that don't operate any more. The house was built in the late 80s and with cranks say K&K it looks like. They also say Entrygard Truth and some numbers 20810, R30842. Those number can be found in the pictures I sent over. The pictures are of a window that functions in my house and I'm assuming it would be the same hardware as what's on the non operational windows.