KeeYees Professional 3D Printer CNC Kit with E-Tutorial - CNC Shield Expansion Board V3.0 R3 Board A4988 Stepper Motor Driver DC Power Cable Mechanical Switch Endstop with Jumper caps sold2024 Grinding in hard-to-reach work piece

Grinding in hard-to-reach work piece areas

Multiple grit design: there are 3 pieces of bristle disc in the package

Simonds International manufactures tools for cutting and finishing

White 120# grit - Used on soft metal such as aluminum

KeeYees Professional 3D Printer CNC Kit with E-Tutorial - CNC Shield Expansion Board V3.0 R3 Board A4988 Stepper Motor Driver DC Power Cable Mechanical Switch Endstop with Jumper caps sold2024 Grinding in hard-to-reach work pieceKeeYees Professional 3D Printer CNC Kit with E Tutorial CNC Shield Expansion Board V3. 0 R3 Board A4988 Stepper Motor Driver DC Power Cable Mechanical Switch Endstop with Jumper caps CNC Expansion Board: GRBL 0. 9 compatible Runs on 12 36V DC 4 Axis support: X, Y, Z It can drive 4 stepper motors, and each stepper motor only needs 2 IO ports. That is to say, 6 IO ports can manage 3 stepper motors very well, which is very convenient to use. A4988