Modular Code Normal Type MTC-100W 10m Maxer Electric Used to connect modular jacks to communication devices such as telephones and fax machines. This cord can be used for 6-pin, 4-core NTT-specification home telephones. Purchased from a recycle shop, but I haven't had a chance to use it and it has been stored. It has been opened. Due to shipping costs, we will ship it in a packing bag without using cushioning material.