TOTAL LEAK PREVENTION: Our filter drain plug adopts screw design and strong sealing. The non-return type water plug is equipped with an O-circle to total leakage prevention DURABLE MATERIAL: This filter is made of high quality rubber material. It is wear-resistant and durable, strong and pressure-resistant. After high temperature resistant treatment, it is not easily damaged or deformed during use. HIGH PRECISION: This drain plug features precise thread size, pure hand design and fine grinding machine, precise O circle size, ensuring stable installation. EASY INSTALLATION: This threaded pool filter drain plug is easy to install and requires no special tools. Simply insert them into the drain and tighten. MULTIFUNCTIONAL: This type of drain plug can be used for pond, , fountain, pond, water pump, filter and other occasions, versatile and multi-functional. size: 5.5 x 3.3cm Material: rubber colour: white Package Contents: 5 x Filter Drain Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.