Package includes: 20 glass shelf clamps with hinges, suitable for 4-9mm thick glass, use with screws (screws are not included). High quality: These shelf clamps are made of durable zinc alloy materials, corrosion resistant, sturdy and unbreakable, can help keep your shelves stable and firm. Design: Small and exquisite design, sturdy and durable, elegant appearance. Thicker material: The thicker clamp arm ensures better load-bearing capacity. The non-slip rubber particle can prevent shifting, making the glass firmly fixed. Application: Widely used in glass or wooden fixed shelves, such as bathroom glass shelves, kitchen cabinets, etc. wine cabinets, showcases, etc. Best suited for use in a dry indoor environment. Product Description Specifications: Material: Zinc alloy. Color: silver. Size: 19mm*16mm. Weight: 151g. Package content: Contents Package: 20 Pinless Glass Clamps. Features: Polishing treatment and protection can resist corrosion and keep shiny as new after long time use. Well-finished surface, even more waterproof and rustproof, it is smooth and does not hurt your hand.