Staubli Crocodile Clip 4 mm Connection, 19A, Black

Multi-purpose clips that meet safety requirements IEC/EN 61010
Dolphin clips have all round insulation and mate with 4mm safety plugs and probes
Toothed jaws open to hold diameters up to 30mm, yet also grip fine wires
The standard type accepts 4mm shrouded plugs
The probe extension type will take both plugs and probes with 4mm plug tip

422-5039 and 422-5045 are CAT II, 893-5774 and 893-5777 are CAT IV.