... studs 2. flat tyre studs 3.size:9-10,9-11,9-12,9-13,9-14all the specifications can be used in ... +/-0.15 mm,11mm,12mm,13mm,14mmHead Diameter(D)9+/-0.2 mmShaft Diameter (D1)2.3 +/- 0 ... Motorcycle, ATV, Farm, Tractor: GRADECoHcDenRSHV30GRAIN SIZEJX0197.5-9.011.0-14.012.68-12.7850-901400-16001. ... A02B02Free carbon and and Graphite phase :size : (um):1.2-1.8index of abrasive resistance : ...