Update: Don't loose your balls!
Some users have reported losing their Xmas balls on the road after hitting something, as the old bolts only allowed left to right movement.
These new bolts also allow forward and backward movement, so if you hit something they shouldn’t simply break. They are fully compatible with all existing parts.
Once installed, they can’t be easily stolen (If you use pins) and the bolts themselves are much stronger as they print flat on the bed.
Files now included, if you downloaded these already you can get them without extra charge.