Thread length: 75cm, 150cm etc.
Thread diameter: 4/0, 3/0, 2/0, 1/0, 1, 2, 3 etc.
Needle length: 18mm, 22mm, 30mm,35mm,40mm, etc.
Needle curvature: Straight,1/2 circle,1/ 4 circle,3/ 8 circle,5/ 8 circle, loop round
Cross section: round bodied,cutting,