Triangle bearing broke 30 seconds after my first bearing, supposedly solved sticking problem caused by contact cement makes Joking they just put this triangular piece of plastic on top of the bearing, the bearing seized up almost immediately and the triangular piece fell off here is the bearing and it's just slip it's junk don't buy it if it blew away, it ruined a countertop I was making, it cost me $200 in materials and two weeks to reorder, and upset customers.