You have to determine the Bolt Circle Diameter (BCD) of your chainset, it will be on of the current standards. You could check out the Truvatriv website for info.
Any chainring of the same BCD will fit.
TA are very fine rings made of extra tough metal that are used by professional riders, tourists and other long distance riders. Any other ring will fit as well but note that the ramps and pins are often matched between the rings for optimum shifting.