Project Mu seven sided lug nut adapter key. Replacement key for Project Mu lug nuts. New improved thicker wall key! New Thick Walled Project Mu Keys are ~24mm in diameter. Dual socket head, accepts 19mm and 21mm. Fits both 12×1.25mm and 12×1.50mm Project Mu lug nuts. PMU #30884T

Hand tighten only. Do not use Impact gun.

Sorry, No returns on Keys