A. Standard Sharp Point (R),(RG) -Best suited for stable fabrics or tight weave materials such as canvas, denim, bath towels or designs on caps. B. Light Ball Point (FFG) -The perfect all purpose needle, with character-istics of both sharp and ball points. Works well on all fabrics, but is best suited to jersey, terry knit sport shirts and similar fabrics. C. Medium Ball Point -Designed for use with delicate loose knit sweater fabrics. Use this guide to help determine which backing is best for your project. If you are still unsure about a needle selection, a Light Ball Point is good for nearly 90% of all embroidery. If you questions, please contact us for further assistance. System 16x257 - Designed for industrial embroidery; a reinforced shaft and string polished needle eye provides the perfect needle for most applications. System DBxK5 - Well suited to embroidery; has a reinforced shaft, a larger needle eye and an eye to point distance slightly less than 16x257. System Gebelube - Excellent for use on high friction materials. Similar to Teflon coated. System Gebedur -Titanium nitrate coating; remains sharper longer than standard needles.