CRL Sliding Glass Door Roller with 1-1/4" Nylon Wheel 5/8" Wide Housing for International Doors - Bulk Used By International Patio Doors Has a steel housing which is 5/8in (15.9 mm) wide and 1-3/16in (30.2 mm) tall Nylon ball bearing roller is 1-1/4in (31.8 mm) in diameter and 5/16in (7.9 mm) wide Minimum Order: 1 Package Ten roller assemblies per package.