1. Material: plastic 2. The material is resistant to pressure and drop, strong and durable 3. Multiple gears can be adjusted for one purpose 4. More suitable for 1.5-2.5 diameter water pipes 5. It can be used for the official water pipes with a diameter of 2.3-2.5 when no accessories are added 6. When the water pipe is too thin, the auxiliary accessories are tightened. When adding an accessory, it can be used with 1.9-2.2 diameter water pipes. 7. When adding two accessories, it can be applied to 1.5-1.8 water pipes 8. Weight: 65g 9. Dimensions: 22x10x7 cm 10. Only racks, no other items