BIONIKA Cortilog PCL, Multi-unit retainer screw, 4+1 package offerRetainer screw for screw retained multi unit abutments, which clamps together the crown and the Multi unit abutment, fixing them to the implant. The design of the implant heads and accessories is not always the same, but it is compatible with the original design. The image is an illustration. The coloring and geometry of the finished product may be different depending on the set parameters. The price applies to a package of 6 screws.