KWIK ABEC-5 Skate Bearings 4 wheel quad and inline skates will need 16 bearings. 5 wheel inlines will need 20. (you need 2 bearings per wheel) KWIK Speed Skate ABEC-5 Bearings are pre-spun at the factory to ensure tolerances that exceed standard specifications. Only the highest grade steel balls, chrome steel races, and polished brass cages go into every KWIK ABEC-5 Speed Bearing. A super-smooth finish on the race ways and a high-speed lube allow a quiet spin while increasing the load capabilities. KWIK knows you don't want to spend your time cleaning your bearings so they designed KWIK ABEC-5 Bearings to deliver maximum performance with minimum maintenance. (may come individually or in packaging as seen below)