The fixation set for tarpaulins consists of 5 of each tension springs & wood claws. With this tarpaulin set you can tighten your tarpaulins effortlessly. Simply attach the tension spring to the tarpaulin eyelet & hook into the metal wood claw. Now you can tighten the tarpaulin as required & simply hammer the metal claw into the wood & that's it. The set consists of 5 tension springs & 5 metal wood claws.