Neo-REX MXA MX version.

You can see in the picture if you look carefully, there's SUper Grip Knock tip and Super Grip Knock inktube.
Specification:
Full name:Lakubo Jell Neo-REtractable Xero MX
Length:20cm
Weight:
18g...........
HEAVYBalance:Depends but mine was Dead center
Type:Neo-Retractable :D
Momentum: HUGE!
With inserts:

To make this, it's quite simple, just make V2 except wrap MORE tape, and put SUper Grip Knock tip and Inktube. This will create HUGE momentum.
Insert

This basically work the same with V1.
Lakubo Jell Neo-REX V1:
http://www.youtube.com/watch?v=XOXhE4ULtgkPros:
HEAVY! 18 grams!
Neo-Retractalbe :lol:
Long but not too long
Grip for Infinity tricks
Good for most tricks
Parts quite easy to be found in Japan
Cons:
Parts hard to find outside of Japan
Too heavy for some spinners
Hard to do tricks like Cardioid unless skilled