More about 9 x 2 3/4" or 4.5 x 70 Metric, KAMELEON w/Zip Tip Handy Pack, Sage (100/pcs)...
Kameleon Screws are an excellent choice for composite decking applications. The under head has saw-blade like cutting teeth that cut a perfectly clean hole into the decking.
The Kameleon also features five to seven rings that have three indented fiber traps on each ring designed to trap fibers and eliminate a mushroom effect.
The CEE thread feature enlarges the screw hole allowing the composite decking to settle easily and increasing the screw’s drawing strength and reduces the friction on the screw shank which can result in lowering the driving torque.