General description These CSPARKV Shower Door Rollers are designed for replacing sliding glass door runners in shower cubicles, enclosures, and steam cabins. Made from a combination of copper, stainless steel, and nylon, these rollers offer durability and a long service life. Technical specifications Material: Copper, stainless steel, nylon Roller diameter: 25mm Glass thickness compatibility: 4-6mm Installation aperture: 12-14mm Usage Strong load-bearing capacity Ultra-quiet operation Stable push and pull for smooth movement Effortless and safe to use Other information Package includes: 4 pieces of shower door rollers