Supplied as a pack of 8 contains 4 height adjustable uppers and 4spring loaded lowers. Excellent quality 304 grade stainless steel balls. Suitable for many different makes with12mm glass hole less than 18mm from the hole center to edge of glass. Swivel action to also fit curved and quadrant showers. Wheel diameter 25mm x 6mm. Comes with polished chrome effect covers. , GlassThickness: 4-6mm Suitable for most Shower Enclosures Shower Cabins and Steam Cabin Enclosures there is no Noise and Slide Smoothly.It is easy to Install and Maintenance.
