Inner Tube 12 x 2.25" Schrader - Rubena - AV35
This inner tube with fit the majority of 12" (or 12 1/2") wheels up to 2.5" wide. This tube has a straight schrader valve and is made from a high butyl rubber that makes it more durable and puncutre resistant than similar tubes.
If the tyre pressure is kept high tyres are less prone to punctures.
Snake bites are common if ridden with the pressure too low.
Blow-outs are common with worn tyres.
It is always useful to have a spare available.