Using these KnitPro Mindful Collection needle tips is easy. First, pick the cable you like, whether it's swivel or non - swivel. Then, screw the 5'' US 7 lace needle tips onto the cable. When making a 16 or 20 needle, remember to use 4 tips. As for care, keep them in a dry place to prevent rust. If they get dirty, you can gently wipe them with a soft cloth. Don't use harsh chemicals on them. And don't worry if your package says KnitPro instead of Knitter's Pride, the quality is just as good as before.