SRAM Rival non-drive side crank removal

londoncommuter
londoncommuter Posts: 1,550
edited September 2014 in Workshop
I've unfortunately lost (or it was never fitted) the extractor cap which pulls the non-drive side crank arm off when you back out the smaller bolt. Being tight and wanting it in a hurry, does anyone know if this will do the trick:

http://www.evanscycles.com/products/rac ... r-ec056855

Another member has kindly steered me towards this but I'd rahter just get the cap if possible:

http://www.amazon.co.uk/Truvativ-Crank- ... 7XMF2H2KY4

Many thanks for any tips.

Steve