Different sizes: PG7 (3-6.5 mm) / PG9 (4-8 mm) / PG11 (5-10 mm) / PG13.5 (6-12 mm) / PG16 (9-14 mm) 5 sizes for pack of 25. Durable Material: Electric cable glands use high quality waterproof nylon shield and lock nut washer to seal around your wires, ensure the safety of alkali acid, resistant cable dust and shock. 【Adjustable design】 Adjustable cable joints designed for a perfect grip and an effortless waterproof seal. The multiple threaded design ensures a secure and quick assembly and a permanent fit of the cap nut. Easy to use: Compression cable glands do not require disassembly. The cable entry can be inserted directly and then easily clamped. 【Application】 Nylon cable connector for all weatherproof electrical equipment such as sockets, switches, junction boxes, distribution boards and cable fasteners, etc. Strong resistance to stretching, will not damage cables or devices. Color: White Adjustable electrical cable glands made of fire-resistant and waterproof plastic to help you