Nylon Adjustable Pet Collar & Engraved Rivet Tag, Dog Cat, Black Red Purple Blue This is Strong adjustable Nylon Pet Collar with attached engraved rivet tag. Choose your rivet tag color: Black, Blue, Red, Green, Lt. Blue, Purple, Pink, Silver, Gold, Orange Choose your collar size: Small 3/4" Thick, 11"-17", Medium 1" Thick, 17"-28", Large 1" Thick, 19"-31" Choose your collar color: Blue, Red, Black, Purple Step 4: Email us via the amazon email system (contact seller) promptly after placing your order. Include all of your engraving instructions. If we do not receive an email from you, you will receive two email notices to your amazon email account in the following 48 hours. If after 48 hours we still do not have your engraving info, your order will be shipped blank.