This portable nail knot tying tool is made of durable hard plastic, designed to help anglers tie fishing knots quickly and effortlessly. It effectively keeps your fingers away from sharp fish hooks during operation, avoiding accidental pricks and injuries. It is perfect for beginner anglers who are not familiar with knot tying, simplifying the whole tying process greatly. It fits well for multiple fishing scenarios especially ice fishing and fly fishing, and can be easily carried in your fishing tackle bag without taking too much space.