Slider for 3030 profile (with M6 nut)

I needed a glider for my home-made workbench. It is used to attach an accessory to the 3030 profiles on the sides of the bench. The washer is used to create a flat level. see pics. I added in the supports, only needed is a brim. Printed with 50% gyriod infill.
Printed on Prusa MK3 in PETG with 0.2mm layer hight.