- Single weight: 7.2 grams with a diameter of 2.5 cm and 7.4 grams with a diameter of 3.1 cm 2. Specifications: 4 x 2.5 cm caliber, 4 x 3.1 cm caliber, 7.1 cm long 3. Material: ABS 4. Uses: bottle hooks for shower gel, disinfectant, detergent, hand sanitizer, etc 5. Applicable scenarios: kitchen, bathroom, balcony, etc 6. Features: applicable to all kinds of conventional bottle calibers, durable and easy to install and use