Longest usable yo-yo

Longest usable yo-yo
Who
James Buffington
What
12.12 metre(s)
Where
United States (Chicago, IL)
When
The longest usable yo-yo was 12.12 m (39 ft 9 in) and was constructed and successfully demonstrated by James Buffington (USA) in Chicago, USA, on 21 May 2011. The yo yo's diametre was 7.47 cm (2 in)