Super Precision Ball Bearing 7908CYU/GLP4 Nachi Angular Ball Bearing Phenolic cage & Flush ground single unit 15 degrees Contact Angle Abec-7 40mm x 62mm x 12mm Made in Japan 7908CYU/GLP4 Nachi super precision Angular Ball Bearing with 15 degrees contact angle and Phenolic cage, bearing is ABEC-7 (P4) quality and made in Japan. 7908CYU/GLP4 inner diameter is 40mm, 7908CYU/GLP4 outer diameter is 62mm, 7908CYU/GLP4 width is 12mm.