The guide jig is used for precise guidance during drilling with RUBI diamond crowns. The guide can be used for both dry and wet drilling (with the help of the RUBI water container Ref: 50947). It is attached to the substrate using a vacuum suction cup. Allows drilling with DRYGRES, EASYGRES, FORAGRES, MINIGRES. The tool contains pre-prepared holes for drill bits with diameters of 6, 8, 10, 12, 14 mm. It can be used up to a maximum crown diameter of 83 mm.