... V-belts, variable speed V-belts, narrow V-belts etc Rubber timing belts specifications:1) MXL,XL,XXL,L,H,XH,XXH ... : 80000pcs/week5) Delivery Time : 3-5 working days6) material: rubber, steel, or kevlar cord7) sleeve width is 450mm.8) SGS ... ISO9001: 2000 Certification.9) It may also design and manufacture timing belt with special specification to satisfy customers requirements. Industrial Timing Belt