Wall Mountable Test Lead Holder for 2mm and 4mm Leads50 leads maximum 2 rows for large leads (BNC) 2 rows for small leads (2mm) 9 rows for standard leads (4mm) Mountable on a wall or suitable places for holding test leads and probes Holds a maximum of 50 leads. Mountable on a wall or suitable places for holding test leads and probes. 2 rows for large leads (BNC). 2 rows for small leads (2mm). 9 rows for standard leads (4mm). Features 3 holes for mounting (mounting screws are not included). Measures 10.