9in 1 Led light up crochet hooks are great for long or short projects for crocheters at all levels. Complete set with 9 Interchangeable Heads size from 2.5mm to 6.5mm. 2 brightness levels---dim or bright suits various lighting conditions. And comes with a stylish zip case for convenient to storage.Features:Complete set with 9 interchangeable heads size from 2.5mm to 6.5mm.2 Brightness levels---dim or bright suits various lighting conditions.Built-in lithium battery can be recharged and reused.It can be used as a small flashlight when it is not installed.15 minute quick charging and long lasting battery 7-9 hours. USB charging can be done by wall adapter , power bank or desktop/laptop computer etc.It comes with a stylish zip case for convenient to storage.Each Interchangeable head is marked with hook sizes. Great for long or short projects for crocheters at all levels.Complete Set - Crochet Hook Size: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm.Specification:Handle material: ABS+SiliconeCrochet Hookmaterial:PCOverall crochet length: 15.5cm/6.1inCase size: 18*10*3.5cm/7.1*3.9*1.4inCrochet Hook Sizes: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mmWeight: Approx.133g/4.7ozPackage list:9 x Interchangeable heads1 x USB charging cable1 x Small wrench1 x handle1 x Case