Handling
Allows for the manipulation of an elongated O-part, and example would be like a whip, or a chain, of that sort.
Modifications
This is the changing of the o-part, able to change the shape, or weight or height of the o-part or the user.
Amplification
Amplification is the enhancement of anything, either multiplying its strength, or increasing the speed or strength of the OPT or attack.
Organic
The living O-part, these are different that the rest as they are able move independant of the OPT.
Elemental
O-parts the utilize the basis of the elements: Fire, Water, Earth, Lightning, Wind, etc.