I purchased a set of roll pin punches some time ago but for the life of me just cannot find them anywhere!
Anyhow I had purchased a rivet kit separately & found that the included punch works perfectly in centering the roll pin. I also found using a small ball pein hammer was useful in tapping the pin so as not to totally remove it.
This was the kit purchased on ebay:
http://www.ebay.com.au/itm/4x-Sewing-Craft-Die-Punch-Tools-10-Sets-Rivets-Poppers-Snaps-Fasteners-Button-/231822799084?hash=item35f9b730ec:g:7SoAAOSw3ydV0wZW