20 NEW SOUTHWEST SPEED RACING DOUBLE TAPERED LUG NUTS, 12mm X 1.5, STEEL PLATED TAPERED WHEEL NUTS, 1" SOCKET Twenty (20) Brand New Southwest Speed 12mm x 1.5 Double Sided, Racing Lug Nuts (SWS Part # 205-509). Tapered on both sides 12mm-1.5 threads Extra-strength, plated steel construction 1" Socket size