The rubber casters (set of 4: load capacity up to 40 kg/roller) lend mobility to the E2 – the rollers are designed to be inserted into the side pieces (expansion inserts are included) and fixed into place with an Allen screw. This screw is in a hard to reach place necessitating a short allen key; we have the right one in stock under Accessories for standard ø 25 mm tube connectors. The rollers raise the table by approx. 75 mm. Each roller has its own brake, which guarantees that the table construction is stable and that it will stay solidly in place when necessary