The Loop 900 was made for 2A players who wanted an entirely new kind of looping experience. YoYoFactory contacted 2A players worldwide to find out what makes the perfect looping yo-yo and released the end result in June 2010. The key feature to the yo-yo is its gap adjustment keyhole system, which is controlled by a key tool to precisely adjust the gap setting. This technology allows the user to control the responsiveness of the Loop 900 without having to unscrew it or undergo any tedious modification