Wood screw for indoor installation. Inside . See also our Wood screw C4 outdoor screw. Bright galvanized and waxed. CE marked and tested. The screw has extra everything and is made to provide maximum grip while requiring less force, which saves machine and battery. The screw is extra equipped for maximum quality and performanceCutter tip = Provides a lower torque while reducing the risk of cracks.Saw teeth =Cuts off the wood chips neatlyStem c utter = Mills away and transports chips, which leads to a maximum joint. Grooves= Provides a neat countersinkWaxed = Reduces the tightening torque and further increases the rust protection. This saves both machine and battery