This is a A-580K5 Micro-Rib V-Belt (58") PN: 580K5Main Description As Following : A-580K5 Micro-Rib V-Belt (58") P.N: 580K5 5 Rib X 58 K Micro Rib Polyester CordColor: BlackLength: 58Material: Polyester CordMetric Code: 5PK1473Number Of Ribs: 5Outside Length: 58.63"Pitch Length: 58"Thickness: 0.18Type: K Micro RibWidth: 5 Rib Crossed From: GATKO50580 , , GATK050580 , , K050580 GATES , 4050580 GOODYEAR , 5PK1471 A & I METRIC BELTS , 5PK1472 A & I METRIC BELTS , 5PK1473 A & I METRIC BELTS , 5PK1474 A & I METRIC BELTS , 5050580 DAYCO Found in Section & Models : Industrial Belts > K-Poly Belt, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : 5 Rib X 58" K Micro Rib Polyester Cord Color: Black Length: 58" Material: Polyester Cord Metric Code: 5PK1473 Number Of Ribs: 5 Outside Length: 58.63" Pitch Length: 58" Thickness: 0.18" Type: K Micro Rib Width: 5 Rib