ODI No Waffle MX V2 Lock On Grip Graphite Workshop Engineered Flex Technology (EFT) and DT AIRC KTM 03 Engineered Flex Technology (EFT) and Progressive Damping Control (PDC) helps provide just the right amount of flex and reduces machine vibration to help combat rider fatigue It is an innovative foam based technology that you insert between the rim and the tyre instead of a classic inner tube Constructed from ODI's proprietary material compounds that they have spent over 25 years perfecting These No Waffle grips feature a medium profile perfect for most riders hands or those who like to get the perfect mix of comfort and feel