6805-7 Ceramic Ball Bearing from World Champions ACER Racing. This is a 25x37x7mm ceramic ball bearing.  Uses diamond polished Silicon Nitride Ceramic Balls. Price is for one 6805-7 ball bearing so please choose the quantity you wish to order. Note this is a 7mm width, if you need a 6mm width please choose a 6805-6 bearing which we also have for sale. 

The advantages of our ceramic bearings are vast including lighter weight, lower friction and heat, greater speeds and much greater durability. Fully sealed on both sides.