What You'll Get: 2 Set includes 2 nut + 4 screws + 2 flat guide + 2 rubber pad. Material: High-quality copper nut and fixed pipe have a long service life, reliable performance, strong and durable, and more labor-saving installation. Size: The half-moon nut has an opening length of 15mm and an inner diameter of 31mm. Easy to Install: Very easy to install, with nut, ring and washer, save time and money, easy to install and durable, no need to replace loose faucet, it's an easy way to repair faucet. Kitchen Faucet Lock Nut: This horseshoe nut hot and cold water faucet fastener has an opening design and is shaped like a half-moon. Mainly used for fixing faucets. It can be directly inserted into the faucet hose and tighten the screw to fix the faucet., Manufacturer: JIEDALIN