Heavy-Duty Round-Head Binder Clips, Pack of 2 Key benefits Prevents pressure marks: Wide-head design with rounded encapsulation distributes contact pressure to avoid creasing or imprinting on documents. Secure hold on bulky stacks: Triple-spring mechanism spreads clamping force across the clip so thick or layered documents stay firmly in place without slipping. Long-lasting performance: High-density alloy steel with a multi-layer anti-rust coating increases load-bearing capacity and resists corrosion for dependable use over time. Safe for materials and hands: Fully smooth, full round-edge design eliminates sharp edges and reduces the risk of scratching paper or skin. Easier to press and operate: Widened lever-style pressing surface lowers finger pressure, and the hydraulic cushioning mechanism provides smooth, controlled action for large clips. What it does and why you need it Holds large-format and heavy stacks that ordinary clips or staples cannot secure reliably. Protects important documents from pressure marks and edge damage while keeping them organized and accessible. Offers smooth, fatigue-reduced operation for frequent use in professional environments. Specifications Material: High-density alloy steel with multi-layer anti-rust coating Design and technology: Full round-edge design, triple-spring structure, hydraulic cushioning, rounded encapsulation Ideal for: Blueprint fastening, engineering drawing binding, large document organization, and other heavy-duty binding tasks Package contents 2 heavy-duty round-head binder clips Practical use scenarios Construction site: Secure rolled or folded blueprints and plans for transport and on-site reference without creases or slippage. Engineering studio: Bind multiple large-format drawings or layered CAD prints for review meetings and revisions. Office archive or design department: Organize and fasten large documents and reports for storage or handoff while preventing edge damage. Durability, safety, and consistent hold make these clips suitable for professional environments that require reliable handling of large or delicate documents.