Using these KnitPro Mindful lace needle tips is easy. First, choose your preferred cable. Whether it's a swivel or non - swivel cable from the Mindful Collection, just screw the 4'' US 10 tips onto it. Remember, if you want a 16 or 20 - inch needle, you must use the 4'' tips. When not in use, keep them in a dry place to prevent rusting. You can clean them with a soft cloth. And don't worry about the new KnitPro packaging; the quality of these tools is as good as ever.