The NP20 Size 20, 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 NP20 Cleat size is suitable for SWA cable in the following sizes: 120mm 4 Core 150mm 3 Core, 150mm 4 Core 185mm 2 Core, 185mm 2 Core 630mm 1 Core 740mm 1 Core To complete the installation and termination of the SWA, you may require a a Cable Gland Pack - Available Here.