This 500ml crystal tumbler set is engineered for hospitality operations, bar service, catering companies, and wholesale distributors seeking durable, high‑clarity drinkware. Made from premium lead‑free crystal glass, each tumbler offers exceptional brilliance and transparency, enhancing the presentation of water, cocktails, whiskey, and mixed beverages. The 6‑piece set ensures consistent service standards and efficient inventory management for commercial environments. Designed for high‑frequency use, the thick base and reinforced structure provide long‑lasting durability. OEM/ODM customization—including logo engraving and private‑label packaging—is available for brand owners and large‑volume buyers.