The 15 system-package cobra 2t contains sufficient material for 15 dynamic tree cabling. For the installation, only scissors are required (separately available). According to 'ZTV Baumpflege'*, cobra 2t is suitable as dynamic tree cabling for branches/stems having a diameter of up to 40 cm. The required minimum system tensile strength of 2 t is guaranteed for a full period of 12 years.According to 'ZTV Baumpflege'*, cobra 2t can also be used without shock-absorber as a load/support cabling for branches/stems having a diameter of up to 30 cm.* German treecare standard Kit Contents 100m of Cobra Rope – 2t 30 x Endcap – 2t 14 x Expansion Insert Small (60cm) 10 x Expansion Insert Medium (80cm) 6 x Expansion Insert Large (100cm) 20m of Anti-Abrasion Hose 15 x Shock-Absorber 1 x Mini-Blow torch 1x Manual