Wooden beams:

• Square timber length < 2 m (6,6 ft): 9 × 9 cm
• Square timber length < 3 m (9,8 ft): 12 × 12 cm
• Maximum strut length 3 m (9,8 ft)

Steel tube:

• Remove Hex Nut (Flex)
• Tube inner diameter: 25 - 28 mm
• Wall thickness depending on length and load 4 - 10 mm
• Maximum strut length 3 m (9,8 ft)

• The strut must be firmly connected to the platform at the top with several long wood screws and, in case of high loads, additionally with a steel plate.
• The length of the strut to the tree can be measured roughly; it is better to leave it a little too long and shorten it later.
• Once a suitable spot on the tree has been found, pre-drill the GTS Safety with a diameter of 24 mm and screw it into the tree.
• Then pre-drill the Strut Connector, mount it, adjust it to the desired length with the turntable and screw it tight.

Detailed instructions are available here ...