Product details:

Precision Metal Shielded Bearing Kit Features: High quality metal shielded bearings. Removable shields for cleaning and re-oiling. Complete with standard bearings, flanged bearings, one-way & thrust bearings (if needed for vehicle). Extra bearings included for spares or on demand replacement needs. Metal shielded bearing have less rotating friction than rubber shielded bearings. Less friction greater performance! Comes packaged in a re-useable storage container for spare parts. A great additional to anyones toolbox! 4mm x 8mm x 3mm bearings +(1) extra 6mm x 10mm x 3mm bearings +(1) extra 8mm x 12mm x 3.5mm bearings +(1) extra Age Group: kids.