Sponge rubber rectangular cord. Length: 2m, width: 6mm, height: 6mm.

The rubber can be used to create a bit of surface protection. The cord only barely fits the T-slot of MakerBeamXL (15x15mm). Part of the rubber will stick out and create a cushioning band. The sponge rubber can be easily cut into the desired custom lengths. You have to stretch the rubber somewhat to fit the T-slot, see pictures.