Using your addi Turbo Circular Needles is easy. Just start by threading your yarn onto the needle and begin your knitting stitches. These needles are great for all types of knitting projects, from scarves to sweaters. When it comes to sizing, remember the special sizing details we mentioned earlier so you get the right gauge for your project. As for maintenance, keep them clean and dry. You can use a soft cloth to wipe them down after use. Avoid bending the cords too much to keep them flexible. Store the needles in a safe place to prevent them from getting damaged. And don't worry about the plastic tips of US 36 and US 50; they're durable, but just handle them gently.