20mm Long Brass Male Bushes These 20mm brass male bushes are for use within an electrical conduit system. Steel conduit tube, fittings and accessories are used to route and protect electrical wiring inside or outside a building or structure in domestic, commercial and industrial applications. This product undergoes rigorous inspection by our supplier in both the country of manufacture and in their UK warehouse. We also subject our stock to quality checks to ensure only a high grade and fully functional product reaches our end users., Manufacturer: electrical4all