NEW ANSI HEAVY DUTY Connecting Chain Link w/ cotter pin 1-3/4" x 1" wide NO 140 (these are approximately 1" wide, o narrow part of bracket and about 1-1/8" ID between posts) I do not understand the numbering system on these chains. Hopefully you can. These are all new and awesome. This is a great chain replacement kit. New in packs. packs may be dusty or beat up, but unit is brand new. From large company overstock sale. We are not experts in the field, but can answer questions if you have them. FREE USA SHIP. Will ship international. Contact us for a price, as we do get pretty good overseas rates. NEW ANSI HEAVY DUTY Connecting Chain Link w/ cotter pin 1-3/4" x 1" wide NO 140 (these are approximately 1" wide, o narrow part of bracket and about 1-1/8" ID between posts) I do not understand the numbering system on these chains. Hopefully you can. These are all new and awesome. This is a great chain replacement kit. New in packs. packs may be dusty or beat up, but unit is brand new. From large company overstock sale. We are not experts in the field, but can answer questions if you have them. FREE USA SHIP. Will ship international. Contact us for a price, as we do get pretty good overseas rates.