Just small enough to carry or clip on to the bike and just big enough to pump efficiently the park tool pmp 4 hald pint mini pump is built like all park tools mdash solid all aluminum barrel construction ensures long life and smooth operation soft touch grips and a flip out handle make it easy on the hands park tool pmp 4 hald pint mini pump features the pmp 4 dual head mini pump is built like all park tool tools solid all aluminium barrel construction ensur