THE CORE 2 FLOOR PUMP IS BUILT FOR FOLKS OPERATING ON A TIGHTER BUDGET, BUT DOESN’T SACRIFICE ANY OF THE FUNCTIONALITY OF THE CORE 3 OR CORE PRO MODELS. THE AIRTAP HEAD WORKS WITH ANY VALVE YOU CAN FIND AND THE 2.5-INCH-TALL AVIATION GAUGE IS EASY TO READ AND IS BUILT INTO THE BASE OF THE PUMP TO GIVE IT A ROCK SOLID BASE.