Primary yo-yos used in the demonstration by Luke Renner were created by: Russell, Playmaxx, Tom Kuhn, Monarch and includes a generic red & yellow plastic yo-yo (cameos by Hummingbird & Duncan). Studio footage filmed by Andrew Gomez in Northwest New Mexico 123009 and footage filmed by Steve Renner 1310. Yo-yo topic covered in this instructional video is the different types of primary yo-yo shapes. The three covered are traditional, slimlinemidlineRussell and butterfly yo-yos. This is the second of a two part series. Note: The Russell shape is included with the slimlinemidline group; however this shape is considered unique enough to have its own category. Music is a public domain jazz loop by Florian.