Inner tube help

I've managed to tear my inner tube at the Presta by getting my pump jammed on to the value. Anywa, I now need a new inner tube, the current on I've taken off is a 26 x 1.9/2.125 (Captain tyres 26x2.0)
I was after getting out on my bike today so I've looked on the Halfords site ( http://www.halfords.com/webapp/wcs/stor ... levance||0 ) and can't spot any along that exact size, will any of the other one slisted be OK to use or am I just going to have to order online instead?
Sorry for the very basic question!
Edit, I think I've been a bit stupid and figured it now:
Does the 1.9/2.125 mean an inner tube this size would fit OK? http://www.davehinde.com/mountain-bikes ... resta.html
I was after getting out on my bike today so I've looked on the Halfords site ( http://www.halfords.com/webapp/wcs/stor ... levance||0 ) and can't spot any along that exact size, will any of the other one slisted be OK to use or am I just going to have to order online instead?
Sorry for the very basic question!
Edit, I think I've been a bit stupid and figured it now:
Does the 1.9/2.125 mean an inner tube this size would fit OK? http://www.davehinde.com/mountain-bikes ... resta.html
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Votec V.SX Enduro 'Alpine Thug' 2012/2013 build
Trek Session 8
The 1.9/2.125 means the inner tube is designed for a tyre with a width in that range i.e 1.9" - 2.125"
Votec V.SX Enduro 'Alpine Thug' 2012/2013 build
Trek Session 8
Yeah - get a few and carry at least two with you. In my experience punctures nearly always come in pairs :?
Votec V.SX Enduro 'Alpine Thug' 2012/2013 build
Trek Session 8