Specification: U model, the inner diameter is 6mm, the outer diameter is 26mm, and the thickness is 9mm
Material: POM hard
Color: Black
Bearing type: non-standard 698zz bearing
(slot width =5mm, groove depth =1.5mm radian radius r=3mm)
(inner, diameter, =6mm, outer, diameter = 19mm, thickness = 6mm)
Bearing material: high quality bearing steel