Detailed Product Description size: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4"ITEM NO. TQ-20~TQ29material: Zinc Die Casting, AluminumINDOORS/OUTDOORSSteel with zinc plating. Indoor or outdoor applications. Use to secure Rigid conduit I.M.C. conduit or various threaded fittings to a steel outlet box or other metal enclosure.For more products catalog please contact our company.