Prime-Line Products D 1800 Sliding Door Roller Set with 1-3/4-Inch Nylon Ball Bearing, 2-Pack 2 Steel Ball Bearing Rollers 2 axle pins 2 roll pins 2 carriage bolts with nuts 2 rivet axles 2 binder posts with 8-32 x 1/2 inch screws Can be used in many different patio door or closet door roller assemblies