Springs' Oz Kit is the first Oz Kit that the Vault Hunters obtain after setting foot on Elpis.
Although Springs' Oz Kit is a unique item, it always appears at common rarity.
Springs' Oz Kit is, in essence, a variant of Duality Oz Kit with a few notable differences - it is manufactured by Hyperion rather than Dahl, will only ever be given with the 'increased damage in a vacuum' bonus and will never legitimately have an in-atmosphere bonus.