Features: Made of high quality stainless steel material, not easy to rust or corrode, durable in use. Effectively prevent the clogging of water, flowers, leaves and rats. Easy to install and fix, by adjust the inclination of the clamp. 4 types of size available, you can choose what you need. Suitable for outdoor drain-pipe, exhaust pipe, roof, balcony and other ground. Specification: Condition: 100% Brand New Material: Stainless Steel Color: as pictures shown Model Type: 50 Flat Mouth, 75 Flat Mouth, 110 Flat, 160 Flat Mouth(optional) 50 Flat Mouth Size: 5.5*4.3cm/2.2*1.7in(Upper Dia*Bottom Dia) 75 Flat Mouth Size: 8.3*6.5cm/3.3*2.6in(Upper Dia*Bottom Dia) 110 Flat Mouth Size: 12.8*10cm/5*3.9in(Upper Dia*Bottom Dia) 160 Flat Mouth Size: 18*15cm/7.1*5.9in(Upper Dia*Bottom Dia) Package list: 1 * Floor Drain Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.