Once released the surplus air in the secondary chamber of the lezyne digital pressure over drive track pump pushes a continued blast of air to seat road mtb and plus sized tubeless tyres providing an effective solution to air compressors and co2 units the lezyne digital pressure over drive track pump features a custom digital pressure gauge with accurate 16 inch easy to read lcd display with auto shut off function fine tuning is made easier with the use of the abs2 innovative chuc