↓The tools that require*

Mini hammer, 1.5, 1.8, 2.0mm drill bits, personally I prefer 1.5/1.8mm, pin vise d (0.1 - 3.2mm), Alum. cube with hole.
*Some optional tools.
↓72mm shafts available in the retail store*

It is the 72mm shafts use for Super X chassis, the normal shaft is 60mm. New/used wheels.
↓And the following;

It is a point to drill from inside out. Please take note do not injure neither your finger nor hand.

Well, finally drilled a hole through the wheel.

Then, the shaft is lightly inserted in the wheel. The aluminum cube w/ hole is used or you can replace with something hard and flat surface w/ hole to put under it. Hammer it slowly so that the shaft penetrates through. Again, be careful when hammering.

Yes, if this is done to wheels of four all, it is completion of the penetration wheel.