22 pieces of Aluminium & Steel Multi-coloured Crochet Hooks with Case (weave craft set) - for Knitting - TribalSensationTM (Multi-color Aluminum Crochet Hooks Knitting Needles) Hook size: 12 different sizes, including 2.0mm, 2.5mm, 3.0mm, 3.5mm , 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 8.0mm. Each hook length: about 5.9-inch /15cm. Size is permanently marked on needles. Needles are anti-resistant to keep longevity