|Sigma Blade Zwei|
|Dimensions|| Diameter: 54.57mm |
|Material||Plastic with aluminum weight rings|
|Bearing size||Size C YYJ Large|
|Response system|| Original: Hybrid starburst/O-ring |
Later models: O-rings
The Sigma Blade Zwei by YoYoJam is yo-yo first released in 2005. It is the second signature series model of Daisuke Shimada, and the successor to the original Sigma Blade. It was also featured in a 3A video produced by Shimada himself. The first run of the yo-yo utilized a hybrid response system of a starburst and an O-ring. The later versions came with the O-ring response system.
- "Zwei" is German for "two", referencing on how the yo-yo is the second version of the Sigma Blade.