Screw-clamping adapter, 4 mm plug, spreadable to 4 mm socket, blue, CAT II, SURB 2112 NI / BL

Screw-clamping adapter, 4 mm plug, spreadable to 4 mm socket, red, CAT II, SURB 2112 NI / RT

Screw-clamping adapter, 4 mm plug, spreadable to 4 mm socket, black, CAT II, SURB 2112 NI / SW

Screw-clamping adapter, 4 mm plug, spreadable to 4 mm socket, yellow, CAT II, SURB 2112 NI / GE

Screw-clamping adapter, 4 mm plug, spreadable to 4 mm socket, green, CAT II, SURB 2112 NI / GN