Using these KnitPro Mindful Collection interchangeable lace needle tips is easy. First, choose the cable you want. The tips are compatible with any KnitPro cable, so pick based on your need for a swivel or non - swivel option. Screw the tip onto the cable tightly. When you're making a 16 or 20 needle, remember to use the 4 tips. As for maintenance, keep the needles clean. After use, wipe them with a soft cloth. Store them in a dry place to avoid rust. Don't worry if your product arrives in a KnitPro package; it's still the high - quality tool you know and love.