Sold as pairs. Enough to replace either the top or bottom of one moving panel
Choose height adjustable top or spring loaded bottom.

Choose at drop down - either TWO height adjustable top or TWO spring loaded bottom.

Very Popular replacement part.

Marine grade (304) stainless steel balls.

Wheel diameter is 23.5mm

Suitable for systems with min 12mm GLASS HOLES - NO MORE than 18mm from centre of hole to glass edge

Check dimensions to be certain of suitability