The Topaz line of high quality dependable EMT connectors feature a compression type assembly and provide a concrete tight connection. Zinc die cast construction promotes a natural corrosion barrier to ensure longevity. Applications include use in dry locations to securely bond EMT thin wall conduits to electrical boxes or enclosures. All models available in sizes from 1/2" to 4"; UL listed and confidently backed by our lifetime guarantee. NEMA/ANSI FB-1 compliant.