Used to enlarge and size up ball links to have a smooth fit on ball ends.

Use of ball link sizer tool.

1) First you need to determine the size of the metal round ball link on your heli. (This can be done with a vernier caliper)
2) Then you need to check the size of the ball link end on the ball link sizer tool.
3) Adjust the size of the ball link on the sizer tool by turning in the small philips screw driver inwards (clockwise) - you need a good philips screwdriver, size ph1 or equiv to prevent the screw head from getting damaged.
4) When you have the right size on the ball link sizer tool, just pop this tool in to the ball link plastic end and turn it as you move the plastic linkage about until you get a smooth and non restricted movement of the plastic linkages.
5) Do the same for all the other plastic links and you shoudl have a very smooth and good setup.