RJ21 Cat3 Telco Female-Female Made in our on site workshop these cables are manufactured using a quality 25 pair LSF (Low Smoke & Fume) cable and AMP RJ21 Amphenol connectors.They come fitted with a UNC 440 screw. With options of 90,120,180 degree hoods. Wired to 258a spec these cables are mainly used for voice applications.The cables are fully tested and inspected before dispatch. We can manufacture the cables to any length you require. Large stocks available for next day delivery.