FOR BOTH PRESTA & SCHRADER BIKES Universal Presta Schrader chuck automatically fits both Presta and Schrader valves; more convenient with 18'' extended hose. No more disassembling, no more adaptors, no more sweaty manual pump! (NOTE: Air compressor required with this product to inflate tire) ACCURATE DIGITAL TIRE GAUGEThe air pressure gauge is by far more accurate than analogue, professionally calibrated to always return a reading within 1% of the exact pressure of your tire and incredible 0.1 display resolution (reads 36.0, 36.5, 37.0 etc). No more guessing! Accurately measures a range from 10-200 PSI (0.7-13.7 Bar; 70-1378 Kpa; 0.7-13.7 kg/cm²). BRIGHT LCD BACKLIGHT WITH AUTO ON & OFFWide backlit LCD screen displays large, clear numbers in 4 units per your preference; auto off after 2.5 minutes of inactivity to preserve battery life. AIR COMPRESSOR ACCESSORIESIf you are thinking about adding bike pump, think twice before compare with our Bike Tire Inflator. A Premium quality tire inf