This successor to the original Sigma Blade is the signature yo-yo of Daisuke Shimada. It is a large diameter slim-line butterfly shape with an o-ring and Starburst response. These yo-yos have become a rarity for the YoYoJam line and they only seem to pop up every once in a while so you may want to grab one before they're gone since we have no idea when they will be back again.