Bernstein teledata service case bernstein 6700 the teledata service case from bernstein accommodates a range of the basic tools needed for the installation and maintenance of complex communications and other networks the case is supplied with a selection of 80 tools arranged on two removable trays and in a plastic tray in the bottom of the case which has adjustable partitions the case itself is made from impact resistant grained black plastic surrounded by a sturdy aluminium frame bern