Using these addi Turbo circular needles is easy. Just thread your yarn through the cord and start knitting. They're great for all types of knitting projects, from scarves to sweaters. When it comes to sizing, double - check the actual size as some smaller needles don't follow the standard US sizing. Be gentle with the plastic needle tips of US 36 and US 50 to avoid breakage. To keep your needles in good condition, wipe them with a soft cloth after use to remove any lint or debris. Store them in a dry place to prevent rust on the metal parts and keep the cords from getting tangled.