Direction for use: Firstly, take off net from tap screw thread. Secondly, install LED faucet light screw thread. Thirdly, usage of adapter screw thread inside universal adapter. Specifications: Case material: ABS LED emitting color: Green, Red & Blue Internal diameter: 1.5cm External thread diameter: 2.2cm Item size: 3.5 * 2.4 * 2.4cm Item weight: 21g Package including: 1 * LED light faucet 1 * Internal thread adapter