The SILCA Elettrico Micro Inflator is an electric mini inflator that weighs 3. 9 ounces and carries on the bike in a seat pack. A USB-C recharge takes the place of CO2 cartridges, so there are no spent canisters to carry out after a flat. What Our Gearhead® Experts Are Saying:“On a gravel flat I put the inflator on the Presta valve, and it stopped itself at 72 pounds per square inch, right where I run those tires. With no gauge to watch, I packed up and kept riding.”