4Pcs Bike Ball Bearing Retainer Replacement Mountain Bike Parts 1/4 inch x 9 Balls Bicycle Repair Accessories for Kids/Stretch Bicycle MTB Bicycle Ball Bearings Bike Crank Bottom Bracket

Needed some new bearings for my mountain bike I ordered this product and it was perfect for the job

Worked fine and great value, no complaints

Works fine on my tricycle bottom bracket.

Rolling rolling, off we go.

Bicycle bearing straight forward to fit

These bearings were well packed with grease but felt very rough in use. Spun unevenly and felt gritty as though the shell was catching the balls. Disappointing went back to individual ball bearings. Disappointing

Great part, shipped and delivered quickly.

Ones that came with the bike quickly became noisy. These replacements, inexpensive though they are, have just worked flawlessly.

Lager passen zwar, waren aber schlecht gelagert und daher arg verrostet.