Bought 2 x 2 pulleys. Have been shipped in same package. Arrived after about 3 week. 1 out of 4 has a pair of decent bearings (626ZZ : 6x19x6mm) and weight is about 30gram. Other 3 have very small bearings (Type 106??: 6x10x3mm) and weight about 25gram. Specs of 626 bearings indicates they can handle a 5x higher load compared to 106. Hence huge quality spread...
Bought 2 x 2 pulleys. Have been shipped in same package. Arrived after about 3 week. 1 out of 4 has a pair of decent bearings (626ZZ : 6x19x6mm) and weight is about 30gram. Other 3 have very small bearings (Type 106??: 6x10x3mm) and weight about 25gram. Specs of 626 bearings indicates they can handle a 5x higher load compared to 106. Hence huge quality spread...