Numbered sets contain 12 pieces of interchangeable main aluminum hooks, hook sizes from 2.0mm - 8.0mm, crochet hooks come in sizes, equipped with a wrench for easy use and will not cause the hooks to fall off and easy to take away. The metal head is durable and very strong for long-term use.Crochet set with LED light and 3 push buttons. Press the ' button so the LED will , press the 'S' button for each to increase the number of stitches and hold down the S button to decrease the number of stitches. Repeat the steps above to the "R" button to change the number of rows. Showing quantities makes knitting easier.Set has a built-in lithium battery that is rechargeable and reusable. The battery lasts 7-9 hours after it is fully charged in 15 minutes, and the crochet hook is only 0.7 ounces (about 0.7 liters), and ergonomic. Just click the light switch on the handle, the crochet hook will come, you can knit in the dark, it can protect your eyes well.The crochet hooks use metal crochet hooks, which are reusable, more durable than plastic crochet hooks, have longer service life, and will not damage the wool , and you get 12 interchangeable crochet hooks.Crochet Hook Specifications:Crochet Hooks Size: 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4, 5mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm, 7.0mm, 8.0mm.material: metalColor as visaPackage contents:1 x crochet hook1 x wrench1 x USB charging cable1 x case12 x replaceable hookOnly the above package contents, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The permissible measurement error is +/- 1-3 cm.