Using these KnitPro Mindful Collection interchangeable lace needle tips is easy. First, choose the cable you like, either swivel or non - swivel. Then, simply screw the 5'' US 8 tips onto the cable. When making a 16 or 20 needle, remember to use the 4 tips for it to work properly. As for maintenance, keep them clean by wiping with a soft cloth after each use. Avoid dropping them on hard surfaces to prevent damage. Store them in a dry place to avoid rusting. Even though the packaging and name have changed, they're still the great - quality tools you can rely on.