In between jobs right now and looking to replace my crankset(there is some play going on) on my fixed gear in a relatively inexpensive way. Curious whether the amount of teeth need to be the same as well as the arm size as the current one. And if there are any specs that I should focus on as well.

I currently have a square taper, 44t 8in arms

found these on ebay, any input would be greatly appreciated

http://www.ebay.com/itm/290771941042...84.m1423.l2649

http://www.ebay.com/itm/400343021933...84.m1423.l2649