Smooth : the steel material is polished enough to give a smooth Easy to handle: with extra long eye, peaked tip and thick shaft, the stitching needles are easy to thread yarn through even without a threader The embroidery hand needles can weave in ends and sew up seams on knit and crochet projects Sturdy large-eye needles: made of Metal, they are sturdy enough for leather working, and some thick clothes or shoes repair, vinyl upholstery mend Large eye hand needles: these needle with large eye is easy to thread by hand even for a person with poor eye sight and poor coordination with her hands