Roller (Grooved) - Sliding Windows, Steel / Nylon.

This Roller is constructed out of Steel and Nylon.
The Roller is Nylon.
The axle pins are Steel.
Its surface is Center Grooved.
This design is used by several manufacturers.

Material: Nylon and Steel
Roller Diameter: 1/2 inch
Roller Edge Type: Grooved
Roller Width: 1/4 inch

Contents
4 rollers
4 axle pins

Priced and Sold as a Package.