4 high density plastic pyramids stand would support a table top for epoxy pouring for consistent smooth level coating and sides included. Similarly in acrylic art pouring or spray painting. The 6 cm height is a convenient height for the fingers or palm to lift the finish work piece. The 2 lobe holes are for fixing to the work table or under planter box to avoid leaving the planter box mark or soil stains on the balcony floor. The reversed 4 sharp points to the floor makes a neat support for the raised planter bed. Likewise in degassing epoxy or resins pot inside vacuum chamber is best supported on these pyramids as overspill is too common.
A simple gadget yet practical in application that ensures your master piece art work separate cleanly from the work table.