This is one TORRINGTON CR-10-1 cam follower bearing. It is new old stock in the original rough, shelf worn wrapper (opened for photos). The bearing is .6250" o.d. x .4375" wide. The stud is .250" in diameter x .750" long. The stud thread is 1/4-28. There is a small plug/cap in the plastic bag with the cam follower. CROSS REFERENCE: KOYO NRB CR-10-1; McGILL REGAL CF 5/8; SMITH BEARING CR-5/8. This package will ship First Class Mail anywhere in the USA. There is a Priority Mail option, if you are in a hurry for delivery. Buyers of multiple listings should wait for my final invoice before making payment. I will always do my best to combine items for shipping savings. Payment is expected within four days of the close of the auction. Thanks for looking.