Features:Multifunctional 1. Material: high carbon steel 2. Four-section structure working end, strong torque after heat treatment. 3. With the front sliding groove of the handle, the working end can move freely, and the filter of various sizes can be quickly grasped for quick disassembly. 4. The inner side of the working end adopts the pulling process to increase the locking force, and the filter is not easy to slip when disassembled. 5. The aperture can be adjusted freely and is easy to use. 6. Size: S: for filter clearner diameter: 70-80mm M: suitable filter cleaner diameter: 80-95mm L: suitable filter cleaner diameter: 100-115mm