Forgefix Spectre™ PZ Compatible Wood Screw CSK ZYP 6.0 x 180mm Box 100 Discs This special spoiler assists by

This special spoiler assists by channelling the air smoothly around your existing roof light and thereby reducing both wind resistance and noise levels

For rendering

Thread Sizes: M12 x 1

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Forgefix Spectre™ PZ Compatible Wood Screw CSK ZYP 6.0 x 180mm Box 100 Discs This special spoiler assists bySpectre by Forgefix, incorporates a long list of advanced screw features, often only found in premium screws, into what we've named advanced multi purpose wood screws. They feature a countersunk, pozidrive compatible, recessed head. Fully threaded, up to 50mm, with a sawtooth thread, to prevent splitting, and reamer to prevent jacking (50mm and above). They are also surface hardened with a quick start type 17 slash point. The screws have a zinc yellow