Traditional laboratory procedures for the All-on-4® technique utilize multi-unit abutments, and many technicians use a 15 mm Guide Pin in the Multi-unit Abutment during fabrication. Sterngold Dental now offers its own Guide Pins for All-on-4® technique. However, some companies require you to buy an Open Tray Impression Coping for the Multi-unit Abutment in order the get the 15 mm Guide Pin. Sterngold’s 15 mm Guide Pin is sold separately in packages of 25.