Makeblock mBot Construction Manual page 5

Claw Arm Upgrade
Use 4 x M3X8mm Bolts to anchor
servos to 3D Printed Bumper
(Below)
Use 2 x M3X16mm
Ensure the servo spline is facing outside of bumper
Bolts and 2 x M3
Washers to secure
claw to bottom of 3D
printed bumper
(Above)
Use 4 x M3X40m
Use 2 x M2X10mm Bolts with 2 x
Bolts to secure top
M2 Washers to anchor 3D Printed
and bottom claw
(Right)
Claws to servos spline
(Above)