This wheel nut material is chromium molybdenum steel. Features a laser cut SPOON logo. Tapered lugs with thread pitch of M12x1.5., or M14x1.5 17HEX *Warning: These are TAPERED lug nuts designed for use with aftermarket wheels. They are not to be used on OEM wheels. Please check which lug nut type your wheels use before installing. Sold individually, or sets of 16 and 20 piece.