Upgrade your drop-bar road, track, triathlon or gravel bike with this pair of aerodynamic handlebar plugs. Inspired by NACA airfoils (the same NASA designs found on both high tech space vehicles and all the bleeding edge rim and frame brands you see at your local race), these give your handlebar a teardrop-shaped trailing edge to help you cheat the wind.They are 3D printed from strong, lightweight carbon fiber-infused ASA, finished in a medium-gloss black that pairs perfectly with your carbon cockpit and components. They are secured by black stainless steel hex bolt similar to the plugs that come with high quality handlebar tapes such as Supacaz to ensure you can lean your bike at the coffee stop or load it into the car for a race without losing your plugs. The underside features a recessed cavity that neatly covers your handlebar tape ends for a clean, professional finish.Installation Instructions1. Prepare your handlebars.Remove the old bar ends. If you have previously used compression plugs and tucked in your bar tape, untuck the tape and trim to just a few mm of overhang. These are designed to fit snugly inside your bars and cover the trailing end of the tape.2. Check fitment.Lightly insert the plug to confirm it fits your bar end diameter before tightening. 3. Snug up the bolt.Holding the compression wedge, tighten up the bolt until the wedge begins to push on the walls of the plug and no longer spins freely. Note: similar to the compression system that holds your fork together, this is not designed to be cranked down without the external support provided by insertion. Overtightening here may crack the plug or lead to difficulty in installation. 3.Insert the plug.Push the plug into the end of your handlebar until it is seated snugly. With the correct tension of the bolt, you should feel minor resistance while inserting. If it is now too tight, back off the bolt slightly and try again. If the plug slides in without friction, remove the plug, tighten the bolt and try again.4. Tighten the bolt.Using a hex wrench, gently tighten the bolt until the plug expands to grip the inside of your handlebar securely. If the bolt does not seem to tighten, the compression wedge may be spinning inside the bar. Remove the plug, tighten the bolt one full turn and try again. Avoid overtightening to prevent damage to the plug.5. Check security.When installed, the plug should not wiggle or turn under moderate force.Notes: This is a small-batch item made with a strong carbon fiber-infused ASA filament on a consumer-grade 3d printer. Minor surface imperfections are likely. Photos show a typical item.