High Quality 10 Ball Bearings , this is a popular size that could be used in many application that uses this size 5mm x 8mm x 2.5mm. Bearings are made of Chrome Steel and can rotate up to 49000 rpm, each bearing are rubber sealed from both sides to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease, Bearings are packed 10 bearings in one plastic tube. Lubrication: Self Lubricated (Grease) Packing: 10 bearings in 1 plastic tube FITS: PANDA THOMPSON STADIUM RACING-CYCLONE-STOCKER FITS: TAMIYA GRASSHOPPER II-SUPER G-HORNET FITS: TAMIYA MUDBLASTER-MONTER BEETLE BLACK FOOT FITS: TAMIYA SAUBER(UP GRADE ALL F1'S TO BRGS) FITS: TAMIYA SONIC FIGHTER SRTIKER-FALCON FITS: TAMIYA TA03-TAO3 CHASSIS(BELT DIRVE) TENSION PULLEY FITS: TAMTECH TEAM Losi