A Premium Quality Fastener That Features A Reduced Cylindrical Head To Provide A Concealed Finish. This Screw Is A Top Choice For Decking And Outdoor Wood Projects As It Ensures A Seamless Finish Without Compromising On Strength And Durability.Reduced Cylindrical Head Gives A Concealed FinishUpper Thread Clamps Decking Boards To JoistsSingle Slash Point To Reduce Torque And The Risk Of Timber Splitting At Low Edge DistanceIdeal For Composite DeckingPTDTIM433187BX