Difference between pivots shoes 15-152 and 15-129

A quick learner from Washington says:
Hi, In spite of knowing that I needed the 15-129 tilt window pivot shoe, I somehow ended up ordering the 15-152. However, after going over both of them with a caliper, it seems that the only material difference between the two is that the 129 has a metal brake while the 152 has a plastic one. Can you tell me to what extent the 2 products are interchangeable? Thanks, John
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Paul from SWISCO responded:
Hey there, John. You are correct, the difference between the pivot shoes are the braking. Some manufacturers used the metal brake with success and others the nylon brakes. The metal brake is more secure in locking the pivot shoe by digging into the vinyl track. I hope this has answered your question.
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