70/10H Use on 1 layer of light-weight woven non-stretch fabric

80/12H Use on 1-6 layers of light-weight woven non-stretch fabric

100/16H medium to heavy-weight woven non-stretch fabric. Use for upholstery fabric that is not treated with the fabric stiffener. To determine if you should use this or the NTW needle for upholstery fabric; scrape the back of the fabric and if a powdery substance flakes-off use the NTW.

110/18H We don't recommend this needle for most home sewing machines it is too large and comes too close to the sewing machine hook. We will special order this needle if you find that you need it, so that we can be sure that your sewing machine will not experience damage to the hook.

75/11 HS Use on 1-2 layers of light-weight stretch fabric. This is one of our favorite needles. For years we have used it for free-form embroidery to stop skipped stitches. We did embroidery on raw-hide with this needle. it was the only needle that didn't skip stitches on the heavy leather. (Singer SLANT needle machines and Bernina's from the 830 and older should not use this needle.) See your dealer for manufacturer's needles designed for stretch fabric.

90/14 HS Use on medium-weight stretch fabric. Use for sewing elastic and sewing seams on T'-shirts and Sweat shirt materials. 

Knit/Jersey (SUK) Med/Large ball Point Needle Sizes and uses

70/10 SUK Use on 1 layer of light-weight knitted fabric.

80/12 SUK Use on 1-6 layers of light-weight knitted fabric.

90/14 SUK Use on medium-weight knitted fabric. Great for sewing sweaters seams together.

100/16 SUK Use on bulky knits only if the 90/14 size causes skipped or looped stitches or the thread shreds.

Microtex (H-M) /Sharp Point Needle Sizes and uses

60/8 HM  Use for top-stitching or edge stitching on sheer fabric. (you must use a thin thread with this needle like silk thread)

70/10 HM Use on sheer or light-weight fabric, be sure that the thread you use fits inside the groove on the front of the needle. Great for Invisible appliqué.

80/12 HM Use on cotton weight fabrics.

90/14HM Use on medium-weight fabric. 

80/12NTW Use for sewing through sequins with the Sequins 'N Ribbon foot. Use for sewing on light weight leather/vinyl like fabrics.

90/14NTW Use on medium-weight leather/vinyl like fabrics.

100/16NTW medium to heavy-weight woven non-stretch fabric. Use for upholstery fabric that is treated with the fabric stiffener. To determine if you should use this or the HJ needle for upholstery fabric; scrape the back of the fabric and if a powdery substance flakes-off use the NTW.

Denim (HJ) Sharp Point Needle Sizes and uses

Topstitching Needle (N) Sharp Point Needle with Large Eye- Sizes and uses (Excellent needle!)

80/12N Use on 1-6 layers of light-weight woven non-stretch fabric for topstitching or edge stitching. (Do not use for seams)

90/14N Use on medium-weight woven non-stretch fabric for topstitching or edge stitching. (Do not use for seams)

100/16N medium to heavy-weight woven non-stretch fabric. for topstitching or edge stitching. (Do not use for seams)