I am a Danish furniture designer and together with a manufacturer I am searching a supplier of sleeve nuts to a shelving system. As you are offering different finishing I would kindly ask you to ship a sample so we can inspect the finishing quality before an eventual order. I ask for samples: M6x12mm in finishes ofblack oxidechrome platedbronzednickel platedyellow zinc platedwhite zinc platedIn case you offer powder coating as finish, please also ship a sample of: M6x12mm:matte whitematte blackPlease be so kind to attach a price list, data sheet and of course a bill for the samples. Thank you very much. Feel free to contact me if you have any questions.