HTD1104-8M: 138 enamel circumference=1104.00mm HTD1112-8M: 139 enamel circumference=1112.00mm HTD1120-8M: one hundred forty tooth circumference=1120.00mm HTD1128-8M: 141 tooth circumference=1128.00mm HTD1136-8M: 142 enamel circumference=1136.00mm HTD1144-8M: 143 teeth circumference=1144.00mm HTD1152-8M: one hundred forty four tooth circumference=1152.00mm HTD1160-8M: a hundred forty five teeth circumference=1160.00mm Product parameters: Circular enamel pitch=8.00mm, belt thickness=6.00mm, teeth height=3.36mm, material: rubber