Simply Cycling 20 Inch x 1.75 Inner Tube with Schrader Valve

Simply Cycling CC007 Inner Tube, 20 x 1.75, Schrader ValveTwenty inch is the wheel size most children's bikes move up to at around six or seven, and it is also the standard for BMX and many folding bikes. Simply Cycling Inner Tube in 20 x 1.75 is the tube those bikes take, made from butyl rubber and air leakage tested so it holds pressure between rides.That last part could be more important on a child's bike than an adult's. Bikes that live in a shed and get used at weekends lose pressure slowly whatever tube is in them, and a tyre that has gone soft is the usual reason a bike stops getting ridden.Which valve do I need?This one has a Schrader valve, the wider type also used on car tyres. It is what nearly all children's bikes and BMX bikes are fitted with, and it takes any standard pump, including the airline at a petrol station.The way to check is to look at the old tube or the hole in the rim. A Schrader valve is about 8mm across with a small pin in the centre and a threaded outer sl