ECCPP Hubcentric Wheel Spacers 2PCS 10mm (1/2") (5x120 72.56) Fits BMW with Lug Bolts (12x1.5,40mm Shank) If you don't make sure whether this item fits to you, message us Vehicle Bolt Pattern:5x120mm;Wheel Bolt Pattern:5x120mm;Thread Pinch:12x1.5;Thickenss:10mm;Inner Diameter:72.56mm High quality alloy aluminum 6061 T6, to ensure the highest level of performance and durability for your vehicles. The spacers are machined by CNC with 60 degree taper, bulge seat lug nuts. The studs of our spacers are grade 10.9, heat treated and hardened heavy duty studs for safety. Before installing wheel spacer adapters, please make sure that you have bought the compatible wheel spacer adapters for your vehicle. You can easily check by placing one wheel spacer adapter onto the rim, screw in the nuts manually, if you can do that without feeling any restriction, then you have got the appropriate wheel spacer adapter for your vehicle. If your OEM studs are longer than the spacer&#039;s thickness, you need to shorten the lug studs by grinding them down or replacing with shorter ones.