9 inch Polyester Paint Roller
Description
Using high denser woven polyester fabric with long-nap
For use water-based latex and stains.
9 inch rollers are the most commonly used size.
Great paint pickup and release for semi-smooth to extra-rough surfaces
Thermofused to polypropylene core that fabric bonded to the core firmly
Diameter Core: 1½"(38mm) and1¾"(44mm)

http://www.cohwabrush.com/polyester-paint-roller/9-inch-polyester-paint-roller.html