The 30 piece kit comprises; 25 single hooks and 5 double hooks. These hooks and holders quickly and securely fix in seconds to the bott Perfo panels using the perfolock tool (supplied). Repositioning at any time is just as quick and simple. All the items are zinc plated steel for a long, corrosion-resistant life. All the hook ends have a safety cap. Suitable for 1.5m and 2.0m Perfo panels, Made in UK. No Panels included.