Sponsors and Curators The Museum of Yo-Yo History is a labor of love, and we would not be able to stay up-to-date with exhibits without the support of our sponsors and curators. Big thanks go to One Drop Design and Duncan for supplying us with their latest models, YoYoExpert for their help and support, and to Cody Orr, TotalArtist and YoYoBrothers™ for allowing us to use their collections! If you're a manufacturer, or just a big collector and you want to help support the Museum drop me at line at chimera@yoyomuseum.com YoYoFactory 401k Espionage Exhibit #1215 Type Production Shape Concave )-( Axle Bearing Finish Anodized Color Black Packaging Boxed Construction Multi-piece aluminum Response Special Diameter 2.25" Dia Gap Fixed Weight 68 g Estimated Value $100 Condition Mint in Package Date 2006 Owner David Hall Compare The 401k represented another major innovation in yo-yo technology, as we've come to expect from the Van Dan Elzens. Hans and his team at YoYoFactory created the first yo-yo with an adjustable response system. Shuttles around the bearing move in or out, depending on how you adjust the knob on the outside of the yo-yo. So response can be increased or reduced, depending on how you advance or retract the shuttles. While the 401k came with starburst response, stickers could be also used, making this a very flexible design. Look carefully at the shuttle around the bearing, and adjustment knob on the outside. The Espionage featured a teflon coating, in black on this one, which gave a super slick finish. Yoyofactory was the first to ever try this coating on their earlier Grind series. It also featured the rubberized shuttle response system and their Dorothy bearing. Pictured here is the white teflon version of the Espionage. Other Views Profile View Logo Side Views Response View 2005-2025 Software © David W. Hall & Grahame BaptieWright Content by David W. Hall & Rick Brough