The Pro-Point screw is developed for professionals and discerning DIYers. Maximum performance and quality at the lowest prices on the market. C4 + ( + means that the screw is tested 2000 hours ) the requirement for C4 is only 800 hours. Cutter tip = Provides a lower torque while reducing the risk of cracks. Saw teeth = Cut off the wood shavings neatly Log cutter = Transports shavings and reduces friction. The screw has a cutter tip that reduces the risk of cracks. The screw is also waxed for easier tightening. NOTE ! On dimensions up to 4.0 mm, the screw cannot be manufactured with a cutter tip, as there will be too few threads left to ensure the pull-out value, i.e. 3.5 x 40, 3.5 x 50, 4.0 x 30 and 4.0 x 40 have no cutter tip. Wood screw for outdoor and indoor installation. C4 certificate, tested corrosion protection and waxed. Also meets the requirements for C5 i.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. Thread lengths: M3.5 x 40 - 24mm M3.5 x 50 - 30mm M4.0 x 30 - fully threaded M4.5 x 50 - 30mm M5.0 x 60 - 36mm M5.0 x 70 - 42mm M5.0 x 80 - 42mm M5.0 x 90 - 42mm M5.0 x 100 - 60mm M5.0 x 120 - 70mm M6,0 x 80 - 42mm M6,0 x 90 - 42mm M6,0 x 100 - 60mm M6,0 x 120 - 70mm M6,0 x 140 - 70mm M6,0 x 160 - 70mm M6,0 x 180 - 70mm M6,0 x 200 - 70mm M6,0 x 240 - 84mm M6,0 x 280 - 84mm