[davei]

Hi Steve. Actually there are many types of rollers. More than a dozen that I know of. Three deliveries with backhand spin (Backhand, scoobie, and hook thumb) and two with sidearm spin (two finger, and thumber). Within those delivery types there are different types of roller kinds such as flip or cut rollers. There are also unstable or wide path rollers and narrow path stable rollers which are kind of like flip and cut but both end up flipping. There are also sky roller or big loop rollers vs. straight flip and straight stable. When you roll a certain type of disc it limits your choices of how you can roll it. A Firebird for instance is good for cut rollers and looping or driving straight ahead rollers that are released steeply. A Stingray, on the other hand, is good for Sky rollers and flip rollers that are released much less steeply.