SKS Hirschmann Probes & Test Leads Test lead 629981 - SKS Hirschmann 934160101, The SKS Hirschmann MAL 4-0.64/100-0.25 test lead features a banana jack with a 4 mm diameter and a 0.64 mm socket, and it is 1.00 metre long in red. Manufactured by SKS Hirschmann, this single-piece test lead is typically used in electrical testing and measurement applications. Its robust design ensures reliable connectivity for precise and efficient circuit testing. SKS Hirschmann 934160101 Test Lead 4mm Red 1m 0.64mm Socket