General description You will receive 4 bathtub rollers with a roller diameter of 27 mm, accompanied by screws (screw size: M4 x 12 mm). These high-quality nylon rollers with copper mandrels ensure good overall performance and durability, making them ideal for sliding glass doors in bathrooms. Technical specifications Roller diameter: 27 mm Screw size: M4 x 12 mm Usage Designed for sliding glass doors in bathrooms, shower enclosures, bathtubs, and steam rooms. Ensures smooth and effortless sliding of the bathroom door.