Common sizes are 1 to 10. They are long needles used for a variety of general sewing needs, as well as geometric smocking. Good for picture smocking, assembly work. Common sizes are 7 to 18. Also referred to as Straw needle.
Sharps are medium length needles and are most commonly used for fine embroidery and hand sewing.
Common sizes are 10 to 12. Used for most pull work, duplicate stitch, wool embroidery, and silk ribbon embroidery. Use this needle where separation rather that piercing of thread is desired.