Product Details:

Used for Tub Enclosures and Sliding Shower Doors
4.0 x .70 Metric Threaded Hex Hub

This Sliding Shower Door Roller features a 3/4 inch (19 millimeter) oval edge nylon wheel with steel ball bearing inner-race and 4.0 x .70 metric threaded hex hub.

Wheel Diameter:  3/4 in (19 mm)
Wheel Thickness: 3/16 in (4.8 mm)

Minimum Order: 1 Package
Two rollers and installation screws per package.