The 5-O got it's name because it is half of a 50-50 grind (only the back trucks are grinding, instead of both).
"Grinding" is when a skateboarder rides his or her board in such a way where the trucks of the board are making contact with a rail, curb, etc, and not the wheels. A "Slide" is similar, but when the actual board is making the contact, not the wheels or trucks.
Learn how to 5-0 grind with the 5-0 Grind Instructions.


