This is a A-540K10 Micro-Rib V-Belt (54") PN: 540K10Main Description As Following : A-540K10 Micro-Rib V-Belt (54") P.N: 540K10 10 Rib X 54 K Micro Rib Polyester CordColor: BlackLength: 54Material: Polyester CordMetric Code: 10PK1373Number Of Ribs: 10Outside Length: 54.63"Pitch Length: 54"Thickness: 0.18Type: K Micro RibWidth: 10 Rib Crossed From: GATK100540 , , K100540 GATES , 10PK1369 A & I METRIC BELTS , 10PK1370 A & I METRIC BELTS , 10PK1371 A & I METRIC BELTS , 10PK1372 A & I METRIC BELTS , 10PK1373 A & I METRIC BELTS , 25100540 , , 4100540 GOODYEAR , 5100540 DAYCO Found in Section & Models : Industrial Belts > K-Poly Belt, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : 10 Rib X 54" K Micro Rib Polyester Cord Color: Black Length: 54" Material: Polyester Cord Metric Code: 10PK1373 Number Of Ribs: 10 Outside Length: 54.63" Pitch Length: 54" Thickness: 0.18" Type: K Micro Rib Width: 10 Rib