This drill to take out the broken screw by turning in reverse way.

 

1.6/1.8, 2.0/2.5, Slim

Fixture Remover Screw For Failed Implant Or Implant Marginal Bone Loss By Excessive Torque,
Remove The Implant Fixture In Safety.
In case that Fixture remover screw cannot be separated from the fixture because of excessive torque,
forceps or mini vise can be used to grab and loosen the fixture by turning clockwise