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When you're trying to shave off ounces, do you really need a full set of wrenches Lezyne says no, you really just need a set of bits. The T-Drive is the space-saving solution for bringing a wide variety of wrenches and screwdrivers on your ride without all of the weight that usually comes with that. Its integrated magnet secures the bit so you don't have to worry about losing it, and all of the spare bits fit inside the T-Drive for secure storage. Its machined construction slides easily into your jersey pocket or hydration pack without taking up valuable snack space so you're prepared with the tools and the fuel to keep riding.