Windows latches

A quick learner says:
There are two left and two right latches for each window. They are made of plactic. I'd like to replace them with a more durable material. Thanks.
User submitted photos of window hardware.
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Paul from SWISCO responded:
Could you use our 70-172 knife latch? Look it over and see what you think.
How to remove screen knife latches
How to remove screen knife latches
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