4x SCS8UU Carriage for 120mm Scotchbrite pad

Carriage for holding a scotchbrite pad for making repeatable lines, for creating a brushed aluminum surface finish

I used this to create repeatable brushed finishes on milled aluminum, sanding to 400grit and then using maroon scotchbrite pads

You need two m8 rods, 4 SCS8UU bearing blocks and 16 M4x8 to M4x14 screws