Review on Uxcell Plastic Precision Bearing 200Pcs by Alfredo Testerman

4mm balls are the right diameter for Harken camshaft rebuild. A boot requires 33 balls, so 6 boots are enough. The Hobie 16 has 5 rivets so I'll have a lot of them. I've used McMaster Carr Delrin/Acetal balls in the past so we'll see how long these polypropylenes hold up.