How much can ball handler use his arm?

[JRutledge]

They cannot use their arms to create contact and displace defenders, but that is not the same as simply sticking out an arm and nothing happening. It is just like anything else in the game, they may do something that is potentially illegal but is not illegal because it did not create contact or displace anyone. I say this because many coaches want us to call a foul for a ball handler that did neither or act like the only reason something happened was because of an off hand of a ball handler/dribbler. And a lot of times defenders have their hands on a ball handler and the reaction is the movement of the ball handler in response.

All judgment calls like most things we do and what one official sees as an advantage another official might see as a play-on.

Peace