Schwalbe SV19A Extra Light Tube (29/28/27.5", 40mm Valve) Road handle and piston rod result

handle and piston rod result in a pump that is both competitive in weight with plastic designs while being significantly stronger

This leaves metal core levers both less stiff and heavier than they need to be

you've just found it my friend

making them ideal for very tight tyres and tubeless setups where access to the tyre bead is very tight

Continental have different sizes

Schwalbe SV19A Extra Light Tube (29/28/27.5", 40mm Valve) Road handle and piston rod resultSchwalbe SV19A Extra Light Tubes are for gravel, cyclocross, 27. 5" and 29" MTB, and tyre widths from 1. 5" up to 2. 35". Made from 20% recycled rubber, so not only are they low in weight, they're lower in their carbon footprint. All valves are nickel plated and threaded and valve inserts are replaceable. Less likely to leak, and more reliable. Specifications Fits Tyre Sizes: 29", 28", 27. 5" (Width 1. 5" to 2. 35") Valve Type: Presta Mfr Claimed