YoYoJoker was started by former YoYoJam team member Daisuke Shimada. The company aimed to create high quality yo-yos with features that run against convention. It is mainly a Japanese brand, difficult to find in the USA.
The Stinger is responseless, but easily converted to responsive play. Bright colors and smooth on the string these caught my eye as a collector right away. Very striking elegant design.
This one is available. I will consider all reasonable offers. If interested, please email me, whistler42@swcp.com .