Grooved Roller Assembly for Sliding Windows.

This Roller is constructed out of Nylon and Brass
The Housing is Nylon
The Rollers are Brass
The roller surface is Grooved
It has a 2 position height adjustment
The housing can snap apart for single glazed windows or left as tandem for dual
This design is used by manufacturers such as Merzon

Material: Nylon and Brass
Roller Diameter: 3/8 inch
Roller Edge Type: Grooved
Housing Width: 23/32 inch

Contents
2 roller assemblies

Priced and sold in pairs.