Product Name:TW CouplingMaterial: Brass / Stainless Steel 316Standard Or Nonstandard: StandardTYPE: MK/VK/MB/VBSize: 2" 3" 4"TECHNICAL PICTURESPACKINGFAQ1. Can we get your free samples?A. For the samples in our stocksize, sure, we'd love to provide you for free to test the quality, but hope you can bear the Freight...