These are our favorite replacement treble hook and what we use on tournament day on our crankbaits and topwaters.  They are super sharp right out of the package.  Black nickel finish.  Size 2 is for big crankbaits, size 4 for medium size and size 6 for smaller cranks.

Amistad Tip: If you are on a good crankbait or topwater bite and fishing in a tourney make sure you change your trebles each day, or even during the day.  Fish caught on topwaters and crankbaits are notorius for coming loose.   Sharp hooks are critical for landing these fish.  On small cranks use a number 6 on the front and add a number 4 to the back.  It will help catch those short strikers and often makes small cranks suspend in the stike zone.