Memocab marking system suitable for marking single wires and Viking 3 terminal blocks with order no. 394 02/03 in conjunction with Viking 3-character holder Character holder for single wires - Length: 18mm (7 characters) Conductor cross-section min. (mm): 16 Conductor cross-section max. (mm): 50 Diameter min. (mm): 7.6 Conductor cross-section max. (mm): 12.5