What's in the box 1 - Dynaplug® Racer Pro Tool 1 - Megaplug 3 - Standard Plugs 1 - Standard Twin Tube™ 1 - Standard/Megaplug Twin Tube™ The Dynaplug® Racer Pro enhances the design of the iconic Racer by incorporating Twin Tube™ technology. With the ability to store 4 pre-loaded plugs in one tool, this feature allows for quick and efficient repairs. Protective snap-on caps keep the plugs safe from dirt and harm. Simply remove a cap to deploy a standard size plug (with a soft brass tip that won't damage your wheel) or the aluminum Megaplug for larger punctures. Need more plugs? Just unscrew the Twin Tube™ and flip it over for additional plugging capabilities. Constructed in Chico, California using billet aluminum and stainless steel from the United States, the Racer Pro has a weight of 26g, which is only 2g heavier than the previous version, but provides double the puncture-resistant capability.