Window handle for casement window

Start by looking at our 39-375 Cover & Handle Kit. This looks close to what you have, but please compare and see what you think. 

This looks like the 39-376, the opposite-handed counterpart of the 39-375. Yes, these look awfully close. Slight stylistic differences aren't as important as the diameter of the spline the handle fits onto, which should be 11/32". If in doubt show me the entire operator assembly, including the link arms. That said, I'm confident the 39-375 and 39-376 match what you need.