11-in-1 Convenient Design---The set includes 11 interchangeable heads, the sizes are 2.5mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 8.0mm, easy to replace, convenient to use2 Light Levels---These crochet hooks have 2 light levels, dim or bright, you can adjust according to your needs. When the crochet hook is not connected, it can be used as a small flashlight. USB charging can be done using a wall adapter, power supply or desktop/laptop, etc.Size Marking---Each replaceable head has its size marking, so you can easily distinguish them and pick them up convenientlyPortable Protective Case---The set comes with a beautiful purple box, which can store these crochet hooks well after use and is convenient to carry when going out.Handle material: ABS+SiliconeCrochet material: PCPacking list:11 Interchangeable heads1 USB charging cable1 Small wrench1 Handle1 ShellNote: 1Please allow some errors due to manual measurement.2Colors may vary due to different monitors, please understand.