The topeak peakini ii mini pump is a lightweight super powerful highly efficient single action mini pump it features state of the art moulding technology that produces a unique one piece barrel and head so it will last almost as long as you do it also has a smooth single stroke pumping action that pumps more air per stroke than other mini pumps it also has an ergonomic t handle designed for power and comfort and it has a thumb lock lever that ensures an airtight seal to all val