This is a A-510K6 Micro-Rib V-Belt (51") PN: 510K6Main Description As Following : A-510K6 Micro-Rib V-Belt (51") P.N: 510K6 6 Rib X 51 K Micro Rib Polyester CordColor: BlackLength: 51Material: Polyester CordMetric Code: 6PK1295Number Of Ribs: 6Outside Length: 51.63"Pitch Length: 51"Thickness: 0.18Type: K Micro RibWidth: 6 Rib Crossed From: K060510 GATES , 4060510 GOODYEAR , 5060510 DAYCO , 6PK1293 A & I METRIC BELTS , 6PK1294 A & I METRIC BELTS , 6PK1295 A & I METRIC BELTS , 6PK1296 A & I METRIC BELTS , 6PK1297 A & I METRIC BELTS Found in Section & Models : Industrial Belts > K-Poly Belt, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : 6 Rib X 51" K Micro Rib Polyester Cord Color: Black Length: 51" Material: Polyester Cord Metric Code: 6PK1295 Number Of Ribs: 6 Outside Length: 51.63" Pitch Length: 51" Thickness: 0.18" Type: K Micro Rib Width: 6 Rib