The NP11 Size 11, Steel Wire Armour Cable Clip Cleats from Greenbrook are a strong but simple, economical, single-hold fixing for securing armoured cables in place to Most Surfaces. These durable cable clips can be used for a various amount of applications and perform well during domestic and commercial use. The fixing screw is not included as you will need to choose a type and length to suit the surface you are attaching the cable to. The NP11 Cleat size is suitable for SWA cable in the following sizes: 25mm 3 Core, 25mm 4 Core 35mm 2 Core, 35mm 3 Core, 35mm 4 Core 50mm 2 Core, 50mm 3 Core 70mm 2 Core 120mm 1 Core 150mm 1 Core 185mm 1 Core To complete the installation and termination of the SWA, you may require a a Cable Gland Pack - Available Here.