Set of four locking bolts to fit either genuine 450/451 smart fortwo & 452 roadster wheels or aftermarket. Just select which type you require.
Review from Auto Express Magazine:
All McGard bolts use softer metal for the threaded sections - hardening would cause problems as the wheels heat up - with extremely tough tops fitted separately. This added to the price, but made the nuts all but impregnable, and as a by-product less prone to corrosion. All forms of attack were repelled with ease, and copying the key (with 1,000-plus variations) was hardly a realistic option. Our Best Buy.
SU - Standard
SL - Ultra High Security with spinning outer shroud