Specifications: 1.Body Shape :Super Wide 2.Body Material:Alloy6061 2.Weight:69.5g 3.Diameter:50.8mm 4.Width:45.3mm 5.Gap Width:4.72mm 6.Bearing Size:Size C (Large) 7.Bearing:Concave KK8.Axle:M4*10mm 9.Surface:Shining finish1