1.long service life, bearing wear and tear, resistant to oil, heat 2.good anti-cracking performance, small extending rate Supply Type:1 ... ) material: polyurethane, nylon, steel, or kevlar cord2) Max. width: 150mm3) long service life, bearing wear and tear, resistant to oil, heat4 ... , and various precision machine tools and instruments. PU variou open type timing belt STD, T, AT, H, L,HTD