Materials list :

A- 2 Reynolds 094 (Caps)
B- 2 Muji Hex (Small caps)
C- 2 Hybrid Gel Grip (Tips)
D- 2 Zebra Airfit BallPoint (Undergrip)
E- 1 Sailor Gel (Grip : 5 stripes x 2)
F- 1 Marvy Marker Artist Color 1300 (Barrel)

Tutorial :

Video :