Secure 1.3-finger design: wrapped finger holds cups firmly to reduce slipping or accidental drops. The finger opening is adjustable to fit different cup specifications, so one holder works with multiple cup sizes. Safer experiment handling: the extension rod provides distance and control during experiments, reducing exposure to heat or spills and making procedures safer to perform. Durable, corrosion-resistant finish: sturdy surface coating protects the metal parts from rust and corrosion for reliable long-term use in lab, classroom, or workshop environments. Object-safe contact points: covered pens prevent scratching or damaging delicate surfaces while maintaining a firm grip. Easy, stable mounting: the adjustable clamp base attaches quickly to a table edge for a secure setup without permanent fixtures. Practical uses Laboratory experiments: hold beakers or sample cups securely at a distance while heating, stirring, or observing reactions. Classroom demonstrations: set up repeatable, safe demonstrations that keep hands clear of hot or reactive materials. Hobby and workshop tasks: stabilize containers during glueing, painting, or small assembly work where a non-marring grip is required. What you get A versatile cup holder with an adjustable finger opening and clamp base, a protective coated finish for durability, an extension rod for safer handling, and covered pens to protect held items. Compatible with a variety of cup sizes and designed for repeated, practical use.