High Precision Ball Bearings 7006CYDUP4 Nachi Angular Ball Bearings 15 degrees Contact Angle Abec-7 30mm x 55mm x 13mm Made in Japan 7006CYDUP4 Nachi high precision Angular pair of Ball Bearings with 15 degrees contact angle and Polyamide resin cage, pair of ball bearings is 2 duplex bearings, bearings are ABEC-7 (P4) quality and made in Japan. the 7006CYDUP4 inner diameter is 30mm, the 7006CYDUP4 outer diameter is 55mm, 7006CYDUP4 width is 13mm.