Effortless Creation: Our Fibonacci Coil Winding Jig offers a simple and efficient solution for crafting Fibonacci coil copper antennas, empowering you to explore the world of electroculture gardening. Two Size Options: Choose between two sizes - Large Size and Small Size 2 Pack - to suit various projects and customization needs. Both winding jig are suitable for 11-22 gauge copper wire. Premium Quality: Crafted from high-quality materials, our jig ensures durability and longevity, ensures for repeated use across multiple projects. Enhance Your Gardening: Create precise and standardized electroculture gardening copper antenna Fibonacci coils effortlessly, enhancing the growth and vitality of your plants in electroculture gardening projects. Helpful hints: Use smaller gauge wire, the higher the number the smaller the wire diameter. Smaller wire will bend easier but will not be as stiff. 12 - 18ga. is a good all around size for making electroculture coils. Material: PP, Size: large height 10.3m diameter 7.5cm; Small height 6.3m diameter 3.5cm.