You are buying Two inner tubes, SCHWALBE 12" or 12-1/2" x 1.75 to 2.25", ETRTO 47/62 - 203. 

Included in the box is a tyre pressure gauge. This will work with Woods or Presta valves, but NOT schrader.

The tubes have a Woods valve, overall length 35mm.

Order 1 unit, get two tubes, and two pressure gauges.

Personal collection available from Redditch, B98 7YR, or delivery as listed.