For the 3D ones, coronal 3D macro retention, 10Pcs fiber post/Box. Dental Fiber post Bulk Ones. Clear transparent, blue ring, means 1.6mm.This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical, Lab & Dental Supplies\Endodontic Posts". The seller is "acmedental" and is located in this country: CN. This item can be shipped worldwide.