i think the hi power zen is a great yoyo here are some specs;
Quantity 29 item(s) available
Manufacturer Shinwoo
Shape Butterfly / Wing
Weight (g) 62.00
Width (mm) 39.00
Diameter (mm) 54.00
Gap Width (mm) 4.95
Bearing Size (Inside x Outside x Width) .250 x .500 x .187 in
Gap Type Fixed
Stock Response System
It is also metal and only 45 dollars you cant go wrong with that