Green: 600*50 * 0.35mm Tension Value 5 ~ 10lb Weight 14G Blue: 600*50 * 0.5mm Tension Value 10 ~ 15lb Weight 16G Yellow: 600*50 * 0.7mm Tension Value 15 ~ 20lb Weight 22G Red: 600*50 * 0.9mm Tension Value 25 ~ 30lb Weight 26G Black: 600*50*1.1mm Tension Value 30 ~ 40lb Weight 30G