SPM (super precision machine cut) titanium series kingpin ball (length 12mm type).
Using lightweight/high-rigidity titanium material and high-precision cutting. he commercialized his ��5.9mm specification kingpin ball (12mm total length type). which is used in the YD-2 series. etc.

The high-precision ball processing makes the movement of the joint smoother. and by making it lighter. you can expect a significant improvement in exercise performance.
The beautiful finish is also perfect for looking up his machine. Please try it!
*Dimensions are as shown in the image. Please check the dimensions of each part carefully before purchasing.