The bumper protector spike protects your Smart car from possible light knocks and benders, while giving your car a bit of attitude as well. These bumper spikes give you enough distance from the car behind you at tricky parking situations like parallel street parking or crowded parking lots,it's easy to screw into the tow sockets in the rear bumper of your Smart car with no tools required Aluminum Material,with Satin Silver finish (Not cheap plastic) Fit both the front or rear bumpers Simple twist on installation with no tools required Name:Front/Rear Bumper Spike Guards Protector Model:916331 Compatible:Compatible with 2008-2014 , ED, 451 Electric Crossblade, etc (Not Fit 453) colour:black material:Aluminum alloy<br><br>Package contents: 1* anti-collision device Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.