Rochet Jewellery Moto GP Pitstop Black & White Ceramic Ring Official MotoGP range of mens jewellery, pure black and white ceramic mens ring. 8mm wide. For purchase, go to Mekchoudi - Carametis UK website Size 9 US (60 mm)10 US (62 mm)10 3/4 US (64 mm)11 1/2 US (66 mm)12 1/4 US (68 mm)