A portable hand pump developed for fat bike tires the micro floor drive xl is a portable hand pump with floor pump capabilities developed to efficiently inflate fat bike tires it features a cnc machined aluminum construction which keeps its weight to a minimum without sacrificing durability an extra large high volume barrel produces large amounts of air with each pump and can inflate tires up to 35 psi 24 bar a long integrated hose and a stainless steel foot peg improves pumping effic