Roller Assembly (Flat) - Sliding Windows, Vertical Rail - Nylon / Steel.

This Roller is constructed out of Nylon and Steel
It is installed on the vertical rail
The Housing is Stamped Steel
The Rollers are Nylon
The Roller surface is Flat
This design is used by manufacturers such as International

Material: Nylon and Steel
Roller Diameter: 1/2 inch
Roller Edge Type: Flat
Housing Width: 11/32 inch

Contents
2 Roller assemblies

Priced and sold in pairs.