National Hardware N280-032 V7602 Long Stem Heavy Duty Rollers in Plain Steel, 1-7/8" roller, 7-9/16" stem, 7/16" shaft Authorized Replacement for Stanley Hardware Stock #S730-800 The product is 1-7/8" HD Garage door Roller 10 Ball Bearings For Longer Life The product is manufactured in China Steel wheel Ten ball bearings Factory lubricated For most sectional garage doors