Various sizes: PG7 (3 - 6.5mm) / PG9 (4 - 8mm) / PG11 (5 - 10mm) / PG13.5 (6 - 12mm) / PG16 (9 - 14mm)) 5 sizes per set, & grave ; from 25. Durable material: The cable gland uses high quality PA6 fire protection. IP68 waterproof nylon gaskets and lock nut to seal the cables to ensure resistance to alkali, acid, dust and shockproof from the cable. [Adjustable design] Adjustable cable connector, the design is perfect for gripping, waterproof and sealed without effort. The multi-thread design ensures a quick and safe assembly and a permanent fixing of the lock nut. Easy to install. use: the compressed cable gland; it does not need to be disassembled. The cable entry can be inserted directly and then easily tightened. [Application] Nylon cable connectors for all weather resistant electrical equipment, such as sockets, switches, junction boxes, distribution boards and cable ties . Strong tensile strength, will not damage cables or equipment.