【Material】：Solid Brass Material,This faucet locknut is premium brass material construction,special finished to resist corrosion and tarnishing, anti-rust. 【Design】single hole faucet extension mounting pipe. 【Function】：This mounting kit is ideal for use with thick deck mounted commercial faucets 【Size】:4.7 Inch (12cm)& 5.9 inch(15cm)& 7.9 inch(20cm) 【Service】：Re-issued if lost or damaged, if any problem can contact customer service. Details: Material: Solid Cooper Mate