Top cleats are one inch high on 12 inch centers, pully surface is cogged on 2 inch centers
NSN 7035-01-471-7648
NSN 5945-01-106-3893
NSN 6135-01-519-7879
NSN 5935-01-176-3610
NSN 6685-01-148-7073
NSN 5935-01-601-2038
NSN 5915-01-365-2668
NSN 6650-01-381-3299
NSN 5930-00-652-8919
NSN 5930-00-941-4092
NSN 5998-01-250-1166
NSN 5915-00-926-0109