This is upgrade is for TILT PRO (X4 and X8) and TILT 500.
We only ship the ball bearings and the adapters for the arm supports, not the arm supports shown in pictures (those trapezoidal plastic 'blocks')
When you order the set, please check the approximate dimension that you have in the arm support because it can be 15 or 19 mm. Then please inform us, in the comment area during check out, the dimension you have and we ship:
- 4 pcs ball bearings
- 6 pcs bearing adaptors (yes, 2 extra plastic 'rings')