Thank you for viewing! This product is a line knotting machine for connecting PE line and shock leader! Among the line systems that connect PE line and shock leader, the FG knot, which braids the line into the leader, is very famous for its high strength, but there are many steps involved, and it is often difficult to braid the PE line into the shock leader well, resulting in a decrease in strength. By using this product, you can easily create an FG knot strength line system quickly! I myself use it, and I have never had a line system created using this knotting machine come undone when pulling up a fish! The knots I actually created are listed on the final product page, so please take a look! The usage is the same as the Hapyson line twister. You can search for "line knotting machine" or "line twister" on YouTube to see videos on how to tie the knots. I think videos are easier to understand than written instructions. I myself learned how to use it by watching videos! 【Body Size】 Length 11.2cm Width 6cm Thickness 2.3cm (thickest part) Weight 85g Batteries: Two AAA batteries (not included) 【Compatible Lines】 PE Line 0.6 to 3 Leader 1.5 to 12 【Product Contents】 Line knotting machine body: 1 Spool clip: 1 If you have any questions, please feel free to ask in the comments. This product is an imported product, so there may be scratches or marks that occur during transportation. We always inspect and check the operation before shipping, but please understand this beforehand. Regarding discounts, we are offering it at the lowest possible price, so it is difficult to offer discounts on single items, but please contact us in the comments when purchasing multiple items. Thank you! I have other items for sale, so please take a look! #Kinachan Knot assist/Assist tools #Fishing #Shore jigging #Leader line #PE line #Fishing line knotter #Line knotter #Electric line knotter #Automatic knot assist #Knot assist #Kinachan