General description The CSPARKV Shower Door Roller Set includes 8 rollers designed for smooth sliding of shower doors. This set consists of 4 upper rollers and 4 lower rollers, making it a complete solution for your shower door needs. Technical specifications Roller diameter: 25mm Applicable glass thickness: 5mm Glass hole size: 11mm Material: Plastic and stainless steel Installation Easy to install with included nuts and plastic covers Designed for convenient movement Usage Suitable for most shower rooms, bathrooms, and steam rooms Helps save space and effort