The fixation set for tarpaulins consists of 5 of each tension springs and wood claws with this tarpaulin set you can tighten your tarpaulins effortlessly simply attach the tension spring to the tarpaulin eyelet and hook into the metal wood claw now you can tighten the tarpaulin as required and simply hammer the metal claw into the wood and thats it the set consists of 5 tension springs and 5 metal wood claws