Using these KnitPro Mindful Collection needle tips is a breeze. First, choose the cable you like, either swivel or non - swivel. Then, simply screw the 4'' US 5 lace needle tips onto the cable. Remember, if you want to make a 16 or 20 needle, use the 4'' tips. As for maintenance, after each use, gently wipe the needles with a soft cloth to keep them clean. Store them in a dry place to prevent rust. Don't worry about the package change from Knitter's Pride to KnitPro; the quality stays the same.