Suitable for most shower enclosures, shower cubicles, and sauna rooms Easy Slide Shower Door Replacement Roller This shower door roller is easy to slide and is designed for use with 12-14mm glass doors. Replacement rollers for 23mm diameter shower enclosure doors. The wear-resistant wheels feature a smooth ride and low noise. Glass hole of the rollers: 12-14mm. Perfect for most shower enclosures, shower cubicles, and steam rooms. The shower door roller set includes 4 top rollers and 4 bottom rollers.