4Pcs/set, 20sets per box, 80Pcs in total. If you are planning on combining your items, please make sure that you wait until ALL auctions have ended before you visit the checkout. All items must be paid within 7 days. You feedback is VERY important to us. We understand the concerns and frustrations you might have, and will try our best to resolve the isuues.Exchanges are offered for items that are defective or damaged when received, although this is highly unlikely. Defective items or problems with your order must be reported within 3 days after receiving. Please keep all packaging, documentation, packing list, etc. That came with your order. These will be used to verify claims if there is any problem with you. Serivce is our #1 priority at Dentaltree! We offer the best items at the best prices. We strive to exceed all your expectations and put a smile on your face. We stand behind our products and pride ourselves on OUTSTANDING customer service. Didn't receive the goods in time? Didn't receive goods over three month? Under normal circumstances, the transport time of the United States is 7-14 days, and about 25 days for Europe, 30-35 days for Australia, 50-60 days for South America time. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Orthodontic Brackets, Bands & Buccal Tubes". The seller is "dentaltree" and is located in this country: CN. This item can be shipped worldwide.