3' (914mm) length with 12'' spacing. USB is 2.4 Amps (shared between two ports) 5VDC. .040'' (1.0mm) steel housing. Packed two per carton. Each unit supplied with one (1) Coupling and two (2) Blank End Fittings. Each USB module provides 2 ports with 2.4 Amps of shared charging. Please note the charging load on one module will not affect the charging performance of the other USB modules in the product.