1, Select the appropriate "Certain Guide" for the damaged abutment.2, Attach the "Certain Guide" using the Guide Holder.(SRG-H)
3, In Reverse, use The Screw Remover Drill to prepare a channel in the broken screw. The "Certain Guide" will ensure the channel is in the correct place.
4, Also in Reverse, use the Tap drill to remove the broken screw.