A home owner from Montreal (Canada) says:
June 2, 2016
Looking for a replacement part for a window crank. The code located on the inside of the handle is OP06-1520. I have attached three photos for your reference.
Tom from SWISCO responded:
June 3, 2016
Start with our 39-205 and see if this will work. Keep in mind that the spline size for our handle is 11/32", so it's important to make sure yours is the same size.
A contractor from california says:
June 4, 2016
Note that the standard Swisco crank spline also fits Milegard windows.