Bike Expanding Headset Plug

A bike headset expanding plug. Intended to be used instead of a standard star nut. Works on steerer tubes with an inner diameter of 23mm to 26mm. (It can be used in a bigger inner diameters but it may loose some strength.) This means it will work with most aluminum and some carbon 1-1/8" steerer tubes.

Hardware Used:
M3x22 Bolts Qty:3 https://www.mcmaster.com/#91292a801
M3 Nuts Qty:3 https://www.mcmaster.com/#91828a211
M6 Nut Qty:1 https://www.mcmaster.com/#91828a251
O-Ring https://www.mcmaster.com/#9262k107

Material used was ColorFabb XT. Its a strong durable plastic but can be a pain to print.

Update: You can buy the latest version of this design for $5 here http://selz.co/VJT21$WuN
Thanks for the support!