10 black nylon waterproof cable gland connectors for cables 3–21 mm in diameter. These glands protect cable entries, provide strain relief, and give a neat, low‑profile finish while keeping moisture and dust out. Key benefits Waterproof sealing: Keeps water and dust away from internal wiring to reduce failure risk in damp or exposed locations. Wide compatibility: Each gland accepts cable diameters from 3 to 21 mm, covering many common power, signal, and data cables. Multiple thread options included: Fits a variety of enclosures and conduit fittings without extra adapters. Durable material: Nylon construction resists corrosion and handles routine mechanical stress. Strain relief and secure connection: Maintains cable position and reduces stress on terminations to extend service life. Professional appearance: Black finish provides a discreet, low‑profile look on equipment and enclosures. Main features Quantity: 10 pieces. Cable capacity: 3–21 mm diameter. Material: Nylon body for durability and corrosion resistance. Color: Black. Thread options included: M12x1.5, M16x1.5, M18x1.5, M20x1.5, M24x1.5, M25x1.5, M32x1.5, M36x1.5, M40x1.5. Function: Waterproof cable gland with sealing and strain relief. Practical applications Outdoor electrical enclosures: Seal cable entries on junction boxes, lighting controls, and outdoor sensors to prevent water ingress and protect internal components. Marine and damp environments: Route power and signal cables on boats or shore equipment where moisture resistance and corrosion‑resistant materials are required. Industrial equipment and automation: Use on control cabinets, conveyors, or wash‑down areas to secure cables and prevent loose connections during operation. Why choose these glands One kit covers multiple thread sizes and a broad cable diameter range, reducing the need to stock many different parts. Nylon construction balances strength, corrosion resistance, and cost-effectiveness for long‑term use in exposed environments. Designed for straightforward installation to create a secure, sealed entry point that protects wiring and reduces maintenance. Technical reminders Verify thread size and panel hole dimensions before installation to ensure proper fit. Confirm cable diameter falls within the 3–21 mm range for reliable sealing and strain relief.