Which Pitch Arm Ball do I need?

The T-rex 600 blade grips have gone through a couple changes. Look at the pictures and you'll see.

Hint:  Leave the head button off. Most of the time damage to the blade grips is caused by the ball hitting
the head button. If there is no head button, the grip can rotate all the way around without damage.

These are the plastic grips (H60003-2) that come as standard equipment on all 600 kits except the Super Pro Kits.
The balls are only available with the grips. The grips are cheap. Chances are, if you ruined the
ball, you should replace the grips anyway.

This is the original metal blade grip. See how the pitch plate has a built in standoff.
To get a replacement ball you have to buy part H60120

This is the latest version of the Metal Blade Grip. The pitch plate is flat. This type of grip
uses the HN6096 ball.