This listing features glass sliding door runner wheels with a double wheel pulley design and bearing wheels. It is a single piece unit in a 19 mm size, with other size options (23 mm, 25 mm, 27 mm) available in the range. Key benefits - Smooth glide for glass sliding doors: the double wheel pulley design provides even weight distribution for easy, quiet movement. - Stable operation: dual wheels help prevent wobble and improve overall door stability during opening and closing. - Reliable door swings: bearing wheels offer steady performance and consistent door action over time. - Simple replacement: single-piece construction in 19 mm size simplifies installation and reduces parts management. - Clear compatibility options: designed for glass sliding doors, with additional size variants (23, 25, 27 mm) to fit different track systems. Specifications and features - Size: 19 mm single-piece unit (also available in 23 mm, 25 mm, and 27 mm variants for other applications) - Type: glass sliding door swing double wheel pulley bearing wheels runner wheels - Application: suitable for glass sliding doors requiring a two-wheel pulley and bearing wheel configuration - Material: not specified in this listing - Performance: designed to provide smooth movement and stable operation for door swings Use scenarios - Residential patio or interior glass door replacement: restore smooth, quiet door operation by upgrading worn wheels to a 19 mm single-piece unit. - Retail or office glass doors: maintain reliable door movement for frequent use in display cases, partitions, or glass storefronts. - Shower enclosure or bathroom glass doors: improve glide and stability for daily use in humid environments. Installation and compatibility notes - Designed for 19 mm single-piece applications, with 23/25/27 mm variants available to fit a range of track systems. - For best results, replace like-for-like with matching size and double wheel pulley configuration to ensure stable, smooth operation.