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.