Introducing the New Twister Screws E-Coat Decking Screws. We have taken the Superior performance of the Twister Woodscrew and added an advanced Eletropolyseal coating. The Eletropolyseal coating provides superior corrosion resistance, tested to 1000 hours of salt spray testing, tough and durable uniform colour coated finish. The E-Coat screws come in Green and Tan colours.