5 packs Dental Orthodontic 1st Molar Buccal Tube Bands Roth 022 Single 36-40+ For orthodontic treatment Packaging: 4pcs/pack, total 5 packs 10 sizes for your choice 36# 36#+ 37# 37#+ 38# 38#+ 39# 39#+ 40# 40#+ Size 36-40 means 1 pack 36# 1 pack 37# 1 pack 38# 1 pack 39# 1 pack 40# Size 36+-40+ means 1 pack 36#+ 1 pack 37#+ 1 pack 38#+ 1 pack 39#+ 1 pack 40#+ Thanks for your buying, anything need help, please don't hesitate to contact me.