From UNPRLD:This is our first time issuing a second signature for a player. How do you improve a near perfect product? After failing three prototypes, we flew him over to the us to test.We first started by addressing an issue regarding nimbleness. The flash is already a very powerful and nimble yo-yo, but we thought that we could increase the effectiveness. To do this, we changed the material from 6061 aluminium to 7075 aluminum. We removed about 40% of the wall's thickness, and redistributed that towards the rim.Finally, the rim is more friendly than before. With a rounder, heavier rim, no sacrifice is made for speed, and every return to the hand more comfortable than before.Yuki's first competition using production run flashback was the 2018 world yo-yo competition, in which he earned 3rd place in the 1a finals.Yuki Nishisako only needs the flashback. what more could you need?SPECS:Diameter: 56.40 mm / 2.22 inchesWidth: 42.15 mm / 1.66 inchesGap Width: 4.32 mm / 0.17 inchesWeight: 63.5 gramsBearing Size: Size C (.250 x .500 x .187)Response: CBC "Slim Pad" Size 19mm OD