Using these KnitPro Mindful Collection needle tips is a breeze. First, pick the cable you like, whether it's swivel or non - swivel. Then, simply screw the 5'' US 9 lace needle tips onto the cable. When making a 16 or 20 needle, make sure to use the 4 tips. As for maintenance, after each use, wipe the needle tips with a soft, dry cloth to keep them clean. Store them in a cool, dry place to prevent rust. Don't worry if your product arrives in a KnitPro package; it's the same great quality you expect.