Material: Aluminium alloy+ Magnet Weight: About 35g Size: Reference picture Expansion :34.8 x 34.8 x 36mm Storage capacity :34.8*34.8*20.8mm Color:Black Packaging:1 pcs Gas tank cap Product features: 1. BKM-107 gas tank cover is designed with strong magnetic adsorption function, which can be firmly attached to the gas tank to ensure that the gas tank cover is not easy to fall, providing you with a more stable and reliable experience. 2. The product uses a unique dust-proof design, which can effectively prevent dust and impurities from entering the gas tank, helping to maintain the cleanliness and safety of your equipment. 3. BKM-107 gas tank cover is designed with hanging ring, easy to hang on the key chain, backpack, or other places, easy to carry and store. 4. This product is well manufactured and made of high quality materials, promising to provide you with lasting durability and long service life. 5. BKM-107 gas tank cover design is simple, easy to install and operate, without professional tools and complex steps, convenient and fast. Notes: 1.Please allow 1-2cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is the same.