Material: Stainless steel 304 / 316 Surface treatment: Satin finished / Mirror finished Diameter: 45mm Usage: Indoor / outdoor Product type: 90 degree angle connector for Wooden handrail Model: DWFC 5030 Hardwood Handrail 90 degree angle connector for Wooden handrail Designed to fit flush to give you a strong and long-lasting connection. It is stylish, durable and cost effective. Designed with ease of installation in mind. Available in stainless steel Grade 304 and 316 and designed with simplicity of use in mind, the system provides maximum flexibility to overcome unforeseen onsite challenges. The perfect piece to finish your stainless steel handrail quickly and easily.Wood Fitting Connectors website:http://www.din-tsung.com/railing-fittings/wood-fitting-connectors/