1,Circular tube and square tube 2,Suitable for making household products 3,Portable ,durable ,nonstaining ... :+/-0.02mm,2)Thickness:+/-0.02mm,3)Length:+/-5mmSpecificationRound pipe, Square pipe, Oval pipe, Empaistic pipe, Puncher pipeSurfaceBA mirror polishMaterialDDQ, High ... to receiving your inquiry, many thanks,——Wendy WuWEBSITE: www.baofeng-ss.comTEL: 0663-3286698SKYPE: chengfeng-ssQQ: 2287174309