The ForgeFast Decking Screws Reduced Head TORX® Compatible T15 are suitable for fixing into softwood or hardwood They have a deep TORX® compatible insert that reduces cam-out provides higher torque levels and a firmer drive Its super sharp tip gives immediate bite from the very first turn A patented self-drilling thread removes the need to pre-drill the timber and reduces the probability of splitting even when screwing close to the edge They have a hardened case and core to give exceptional strength with a reduced head size that provides discreet fixing and superb countersinking Protected by elementech 2000 surface treatment which provides corrosion resistance up to 30 times longer than some standard zinc coated screws They are highly resistant to pull out they can flex by up to 35mm reducing likelihood of screw shearing when used in flexible materials CE approved for use in load-bearing timber construction