1/4 inch (3.5mm) B-Gauge jack plugs, suitable digital and analogue audio.  Low-capacitance 110 ohm cable.   Nickel plated plugs to MIL spec.  M642 have over moulded black plastic covers incorporating a strain relief.  Note: Yellow cored are NOT phase reversed.

Switchcraft/Action Hardware part numbers:-

LF3BK  Black         LF3BL   Blue      LF3GN  Green      LF3GY   Gray      

LF3R     Red           LF3Y    Yellow    LF3O    Orange

The price of £17.25 is for one piece.