1. Material: polyformaldehyde plastic + bearing (steel) 2. Rotating mop bucket gear replacement parts are mainly made of plastic and metal, sturdy and durable, not easy to deform or rust, so the service life is longer than other gears 3. Easy to install, only a few minutes to complete the assembly, suitable for one-way mop, simple installation and replacement, easy to use 4. Compatible with a wide range of rotary mop bucket replacement gears can be applied to 0-Cedar and Vilida as well as most other brands of rotary mop buckets on the market 5. Weight: about 11 g 6. Size: about 2.55 x 1.8 cm