20pc 12x1.5 Thread Lug Nuts w/ Key Cone Seat 1.38" Closed End Blue Steel Spline

M12X1.5 or 12mmx1.5 or 12x1.5. Long Spline, Closed End. Blue Lug Nuts (Cone Seat) - M12X1.5 Threads. Thread Size. Thin-Walled Socket Tool acts like a key, which adds a layer of security against would-be wheel thieves.

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