M4 Tackle Bore Distance 20*20mm Moving Block For Closed Loop Belt 3D Printer
Specifications:
Bore distance: 20MM x 20MM
Color: Silver
For: M4 (Both sides of the screw)
Thickness: 13MM

Package include: 1 x M4 Tackle Bore Distance 20*20mm Moving Block For Closed Loop Belt 3D Printer