Features:Complete set with 9 interchangeable heads ranging in size from 2.5mm to 6.5mm.2 brightness levels - low or bright to suit different lighting conditions. The built-in lithium battery can be charged and reused. It can be used as a small flashlight when not installed. 15 minutes fast charge and 7-9 hours long life battery. USB charging can be done with a wall adapter, bank power or desktop/laptop etc. It comes with a stylish zipper case for convenient storage. Interchangeable heads each marked hook sizes. Great for long or short crochet projects of all levels. Crochet hook set, size: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm. Specifications:Handle Material: ABS + Silicone Crochet Material: PCSyle: 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mmColor: Black/Red/Rose RedNotes:1. Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Thank you!2. Please allow slight deviation of measurement due to manual measurement.9 X Interchangeable Heads1 X USB Charging Cable1 X Small Wrench1 X Handle1 X Case