B321 BradySleeve markers are used to identify electrical wires and cables used in the manufacturing and construction industries, or in maintenance activities where specifications or environments require the use of sleeves. The special print receptive top coating on the sleeves absorbs printing inks and provides permanent legibility, even under severe conditions. - Exclusive topcoat soaks up ink and retains it permanently, without additional curing. Durable Brady sleeve markers stand up to tough conditions. For use with ID PRO Plus, LS2000 and BradyMarker XC Plus printer labels.