RK DESIGN STUDIO Original Footrest Compatible with X1 (F48/U11) X2 (F39/U10) 1 Series (F40) 2 Series Active Tourer & Gran Tourer (F45/F46/U06); Footrest is designed and manufactured in a domestic factory with stainless steel surface (0.2mm thick: hairline finish). Surface thickness: approx. 3. 0.2 inch (5 mm) mounting surface uses strong double-sided tape (base material: waterproof acrylic), so even if there are some unevenness on the surface of the vehicle, it can be easily replaced, without any tools. The double sided tape allows you to remove it without any damage to your vehicle even when you need to restore it.