Fitment: 2008 and UP MINI COOPER Smart Key R55 R56 R57 R58 R59 R60 Direct replacement for your old dull plastic rim with this trendy cover. Looks Very Cool. Material: Alumnium anodized Measurement: Inner diameter：1.79 INCH （4.5CM） Outer diameter：1.91 INCH（4.8CM） Upgrade the interior look for your Mini cooper. Help to make the key fob prettier and also more durable. Direct fit and no modification required.