1.excellent heat and wear resistances. excellent raction 2.size: 20.5-25,23.5-25,26.5-25,1400-24,1800-25.. 3.E-3/L-3,E-4/L-5s Siz e17.5-25, 20.5-25, 23.5-25, 26.5-25, 1400-24,1400-25, 1800-25,1800-33,2100-35…..Bias and radial OTR, TT/ TL E-3/L-3,E-4/L-4,L5, L-2,L-5S ……..