Description This bumper protector spike protects your smart car from possible love taps and fender benders while giving your tiny car a bit of attitude as well These spikes are meant to be screwed into the tow sockets in the rear bumper of your Smart car These bumper spikes give you enough clearance distance from the car behind you in tricky parking situationslike parallel street parking or crowded parking lots No modification required directly Install Fit Compatible with Smart Fortwo ED 450 451 Electric Crossblade etc Specification Material Aluminum alloyColor BlackSizes About 84 9mm H x 38 8mm D Installation Steps 1 Use tools to open the trunk of the trailer cover2 Align the tail hammer to the trailer bore and insert it into the trailer bore3 Tighten it by ClockwisePackage Included 1 X Car Bumper Nail