Bernstein epa professional electronic service case bernstein 6900 this elegant epa service case from bernstein is made from conductive material and is ideal for use by anyone who has to undertake regular maintenance or installation work in esd protected areas the shells of the case the tool trays and the tray which has adjustable partitions are made from conductive material all housed in a sturdy aluminium frame the lid of the case has a separate pocket to accommodate documents pap