4 Color Fishing Thread Nylon Wire and 6 Color Arm Knitting Yarn: You will get clear, gold, black, red nylon wire and pink, dark salmon, medium orchid, goldenrod, dodger blue, yellow green arm knitting yarn. Large Amounts: You will receive 12 rolls of fly tying supplies in 4 colors and total 60m arm knitting yarn, the abundant quantity can meet your different demands, so you can replace the missing one easily. Size Information: The fishing nylon wire about 0.4mm and about 36m of each roll, total about 432m, and arm knitting yarn is about 1.5mm, 10m of each color, total 60m. Practical for Use: You can tie the body of the fishing flies quickly by these saltwater fly tying kits; They are also applicable for wet dry fly fishing materials Reliable and Soft Material: These fly tying kits are made of quality nylon material, soft, flexible, reliable and practical for you to use, which are not easy to break, deform or fade for a long service time.