Prym Double Ended Crochet Hook, Aluminium
Made by Prym, the same German company that produces the KnitPro needle range.
This hard to find crochet hook has not just one but two hooks - one on each end.
This type of hook is predominantly used in Tunisian crochet (also known as Cro-Hooking or Cro-Knitting).
Having two hooks on opposite ends will allow you to create two-coloured pieces that will have dominantly one colour on one side and a different colour on the reverse side.
Double sided crochet hooks are also indispensable for doing Tunisian crochet in the round.
Available in two lengths, 15cm and 25cm, and different sizes.