Precision Rolling Bearing 7006CYP4 Nachi Angular Ball Bearing 15 degrees Contact Angle Polyamide resin cage Abec-7 30mm x 55mm x 13mm Made in Japan 7006CYP4 Nachi Angular Ball Bearing and Bearing is Precision Rolling , bearing is 15 degrees Contact Angle, Polyamide resin cage and Abec-7, Made in Japan, inner diameter is 30mm, outer diameter is 55mm and width is 13mm.