Railex Combo double arm brackets in a pick module. The combo brackets double as both Garment on Hanger Stock rack brackets and flat pack shelving. Projects, System 200 Slick Rail Storage & Trolley Systems Skills Posted on February 4, 2025 ← Railex System 200 Slick Rail installed in E-commerce facility. This is a new 2-tier freestanding system. Only the bottom tier has clothing on it so far. This system went from a phone conversation and a few hand sketches to a CAD layout with a BOM in just a few days.