ESSVE terrace board screws are designed for railings, wooden decking materials, facades, terraces, etc. c. for installation on a wooden frame outdoors. When installing teak-like wooden decking materials, such as Cumaru, Kirai, Siberian larch, etc. c., it is recommended to always use stainless steel terrace board screws, pre-drilled. Screws made of hardened steel, with CorrSeal coating. There is a fiber cutter at the end of the screw. This ensures very low screw-in torque and reduces cracking. The screw head has 4 cutting grooves for more convenient immersion of the conical base, no rough surface is formed. TX nozzle, TX20.