1000 Feet Colored Cat5e Solid UTP Network Cable (Bulk Box) - Blue
Solid Wire: Also called solid-core or single-strand wire, consists of one piece of metal wire. Stranded wire is composed of a bundle of small-gauge wires to make a larger conductor and more flexible than solid wire. Solid wire is generally used for in-wall wiring where there is little need for flexibility in the wire.
CMR: The 'R' in CRM is for 'Riser'. Riser type cables are engineered to prevent the spread of fire from floor to floor and are suitable for vertical shaft applications.