Track pump with a built in reservoir for "flash charging" tubeless tyres with a fast burst of air.
It can be used as a conventional track pump for inflation/topping up of regular inner tubes and tyres, but also does duty as a very effective inflator of tubeless tyres. With tubeless a quick, high volume boost of air is needed for initial inflation, to effectively seat the tyre's bead and form a good seal.
"The Flash charger TLR features a pressurisable chamber that is instantly releasable to aid in tubeless tyre seating. The durable, transportable pump simplifies tubeless set up."