The purple tip needles are a #14 size needle that prevent skipped stitches in heavy fabrics including knits in ordinary sewing and when embroidering. They feature a ball point tip to prevent fabric thread breakage and a special cobra shaped head to form a proper needle thread loop so that it prevents skipped stitches.
Sometimes you encounter some fabrics which turn out to be a bit of a nightmare to sew. Try these Janome purple tip needles, it's a great "Saver" needle.
Uses -
Embroidery with high density designs and/or thick fabrics
Use with fluffy threads like cotton
Quilting through multiple layers
Normal sewing for stretch fabrics such as knits and tricot or synthetic fabrics and polyester
Five (5) needles per pack.