Three Types of Self-Aligning Roller Bearings Hawkiwel Industries Limted Base Info Model NO.：22215 22216 22217Rolling Body：Roller BearingsMaterial：Bearing SteelSpherical：Aligning Bearings Description Pre：Quiet Noiseless and Durable Rear Bearing for Use with The Sm220 PCB Drilling Machine Next：Steel Ball (0.3mm - 300mm)
