Modelcraft needle bearings cage type modelcraft hk 0608 modelcrafts cage type needle bearing 10mm od 6mm bore is a minimum radial construction height bearing with outer ring and bearing race that is formed without cutting the bearing is pressed into a body track and does not require any additional axial track it should be fitted using a driver the collar of which comes into contact with the end of the bearing marked with the abbreviations modelcraft hk 0608 needle bearing 10mm od 6mm b