... service WQK bearings main products as follows Deep Groove Ball Bearing ( steel cage, brass cage ,nylon ... cage, brass cage, CA and MB)Self-Aligning Ball Bearing ( steel cage, brass cage ,nylon cage) ... Bearing ( steel cage, brass cage ,nylon cage)Thrust Ball Bearing ( steel cage, brass cage)Sphercial Roller Thrust Bearing ... Greece, etc developed countries. WQK bearing ball bearing roller bearing ex-stock