This hub looks very much like ball bearings. Try GFR Street on the street! GFR Street is the name of Gyro's previous model. We want to be engrossed in nostalgic thoughts of Gyro's initial stage. We was fully devoted to making the wheels at that time.
GFR STREET
SIZES 80MM l 76MM72MM
HUB 43MM [BBhub]
THICKNESS 24MM   
HARDNESS
84A
BEARING CORE 608 (STANDARD)
SPACER 10.250.03MM
COLOR BLACK(SILVER HUB), RED(SILVER HUB)
STYLE MULTY SLALOM