Numbered sets contain 12 interchangeable aluminum hooks, hook sizes from 2.0mm - 8.0mm, crochet hooks come in different sizes, equipped with a wrench for easy use and preventing the hooks from falling off and easy to remove. The metal head is durable and very strong for long-term use. Crochet set with LED light and 3 push buttons. Press the ' button to turn on the LED light, press the 'S' button for each press to increase the number of stitches, and hold the S button to decrease the number of stitches. Repeat the steps above to the \"R \" button to change the number of rows. Displaying quantities makes knitting easier. The set has a built-in lithium battery that is rechargeable and reusable. The battery lasts for 7-9 hours after being fully charged in 15 minutes, and the crochet hook weighs only 0.7 ounces (about 20 grams) and is ergonomic. Just click the light button on the handle, the crochet hook will light up, 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 a longer service life and will not damage the wool, and you will get 12 replaceable crochet hooks. Crochet Hook Specifications: Crochet Hook 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: Metal Color: As shown Package Contents: 1 x Crochet Hook 1 x Wrench 1 x USB Charging Cable 1 x Case 12 x Replaceable Hook The above package content only, 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 allowed measurement error is +/- 1-3 cm.