The Virus from Hicoo is a modified butterfly - It has a H profile shape and a deep thumb grind ring. It came in blood red and graphite with some artwork on the sides. The yo-yo was produced by Hicoo and Auldey, one of China's largest toy manufacturers. There was very limited quantities.
Specifications[]
Weight : 64.5g
Width : 40mm
Diameter : 55.5mm
Gap Width : 4mm
Bearing Size : .250x.188x.500
Response Silicone O-Ring