Features:1) Product description: 300# tennis ball eoe 2) tennisball eoe Chuck diameter: 72.9mm 3 ) tennisball eoe with saferim 4) ezo material: aluminum This tennisball eoe can be used for vacuum or nitrogen packaging to protecttennisball inside. The saferim gives more safety for clients. Our strength lies in product quality and variety. We deploy production lines including Karges-Hammer Machines, American Minister Machines and other modern equipment. We develop advanced quality check process at every critical step in the production cycle. We have a team of highly skilled technicians that are constantly perfecting production of tennisball eoe every day. We producetennisball eoe that is high pressure withstanding, yet easy to open and have no sharp edge. Our various technical rating on easiness of opening and pressure withstanding match or exceed those produced by top manufactures around the world. On the other hand, our highly skilled technicians can customize the tooling to fit your product need, which allow us to produce a wide range of products and keep the production cost low.