KSP Performance Extended Thread (ET) Spike Lug Nuts feature an elongated thread design for increased thread engagement and stronger, safer wheel installation — especially suited for Toyota's short factory studs and aftermarket wheel spacer setups. Made from AISI 1035 carbon steel, heat-treated to Grade 8 strength, with a precision-machined one-piece body for no spinning or separation. Chrome-coated finish passes the 72-hour salt spray test for long-lasting corrosion resistance.