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
816-8M-25 Synchronous Timing Belt OEM Part Number 816-8M-25 Belt Type 8M Timing Belt
Technical Specifications: (Inches) (mm) Outside Circumference 32.13 816 Top Width 0.98 25 Belt Depth 0.24 6 Material Neoprene Tooth Profile 8M