The Efficient Velo Tools Presta Only Inflator is a high-quality, rugged tool that works great for professional repair applications and home workshops. EVT was launched by industry veteran Brett Flemming, who spent over 15 years wrenching in one of Portland's busiest bicycle operations. The Presta Only Inflator makes inflating your wheels a breeze. The inclusion of a super low durometer urethan seal slides over the valve exponentially better than most inflators stock rubber seals. If you value quality, high-end tools in your shop, EVT is for you.