Rear Support Posts for mounting rear framework accessories to Heavy Duty, Euroslide and System Tek Workbenches.-Can be used to mount a variety of accessories to workbenches-Choose from 2 sizes:760mm high rear support posts1180mm high rear support posts-Can be used to mount:Light/Tool Rail SupportsUpper ShelvesFluorescent and Category 2 LightsLouvred and Combi BackpanelsPost Fitted Service DuctsSupport Arms for Monitor and Keyboard, and Flat Screen (HD Bench only)