No needle roller bearings shown, but a hard inner surface. The ones I received didn't have a hard inner surface. I used them but was hoping to see if a hard core would work better.
Bearing 608- ZZ1MC3E (8x22x7) NSK//80018
4 Review
Enhanced Performance Sydien SCS12UU Bearing Bushing Diameter for Precision Machinery
4 Review
Linear Clamping Support Bearing by Sydien
4 Review
π Wheels Manufacturing Ball Retainer Bag: Convenient Storage and Protection for Your Ball Retainers
6 Review