Wire-end ferrule, uninsulated, 4 mm², collar diameter (D2): 4 mm, stripping length: 12 mm, contact area diameter (D1): 2.8 mm.
By using the wire end ferrule, the individual strands of a stripped, flexible conductor are securely crimped through a galvanically tinned copper tube. The use of the ferrule creates long-term consistent quality in electrical connections.