The belts exceed USA RMA published ratings levels; They are designed to perform at the identical or higher level than all other major USA Manufacturer's belts of the same type
535-5M-09 Synchronous Timing Belt OEM Part Number 535-5M-09 Belt Type 5M Timing Belt
Technical Specifications: (Inches) (mm) Outside Circumference 21.06 535 Top Width 0.35 9 Belt Depth 0.15 3.8 Material Neoprene Tooth Profile 5M