5mm Bore Bearing - 23mm Round Nylon Pulley Squared Groove Track Roller Bearing 5x23x13mm Inner Diameter - 0.505 inch (0.505") the 21308EXW33 outer diameter is

the 21308EXW33 outer diameter is 90mm and the 21308EXW33 width is 23mm

Dimensions: 26mm x 42mm x 3mm/Metric

UCPPL208 Bearing

SMSK20G Square Flange Anticorrosion Linear Slide Bush

6912LU is double sealed

5mm Bore Bearing - 23mm Round Nylon Pulley Squared Groove Track Roller Bearing 5x23x13mm Inner Diameter - 0.505 inch (0.505") the 21308EXW33 outer diameter is5mm Bore Bearing with 23mm Nylon Pulley Squared Groove Track Roller Bearing 5mm x 23mm x 13mm Nylon Pulley Squared Groove Track Roller Bearing, dimensions are 5x23x13 Nylon Pulley H Groove Track Roller Bearing Pulley White Squared groove with a steel ball bearing Standard: Metric Size: 5mm x 23mm x 13mm Inner diameter (Bore): 5mm Outer diameter: 23mm Tire Width: 13~13. 5mm Quantity: 1 Bearing