This is my Version 2 Robotic hand.

The video about this hand is here:
https://m.youtube.com/watch?v=8AkvVw_g0yo&t=5s

Instructions are posted on my Youtube.

List of parts needed:

6 x 3/4" Flat Head Zinc Coated Phillips Head Wood Screws (BCP3)

Eisco Labs Steel Extension Spring (4in)

HobbyPark Waterproof 7.5kg High Torque RC Micro Servo Metal Gear Digital Arduino Servo for 1/18 TRX4M TRX4MT Redcat Ascent-18 Losi Mini LMT 1/10 TRX4 SCX10

4 Pack MG90D 9g Digital Micro Servo Full Metal Gear 360 Degree Continuous Rotation Mini RC Servos

SG90 Micro Servo 9G Servo Kit AYWHP 10 Pcs SG90 Servo Motor 9G Mini Servo RC Servo

PLA Basic Filament 1.75mm

R4ZZ Ball Bearing 1/4-inchx5/8-inchx0.196-inch Double Shielded ABEC-1 Bearings 10pcs
(14 bearings are needed)

PTFE Tube 1.75mm Filament Teflon Bowden Tubing

Any sort of string(preferably a little thicker)

HobbyPark Waterproof 12g Servo Micro Servo Motor Metal Gear Arduino Servo 4.6kg High Torque Digital Servo Mini Servo
(Optional)

Rubber Bands

V3 Is currently underway.