This is a A-505K6 Micro-Rib V-Belt (50.5") PN: 505K6Main Description As Following : A-505K6 Micro-Rib V-Belt (50.5") P.N: 505K6 6 Rib X 50.5 K Micro Rib Polyester CordColor: BlackLength: 50.5Material: Polyester CordMetric Code: 6PK1283Number Of Ribs: 6Outside Length: 51.13"Pitch Length: 50.5"Thickness: 0.18Type: K Micro RibWidth: 6 Rib Crossed From: GATK060505 , , K060505 GATES , 25060505 , , 4060505 GOODYEAR , 5060505 DAYCO , 6PK1280 A & I METRIC BELTS , 6PK1281 A & I METRIC BELTS , 6PK1282 A & I METRIC BELTS , 6PK1283 A & I METRIC BELTS , 6PK1284 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 50.5" K Micro Rib Polyester Cord Color: Black Length: 50.5" Material: Polyester Cord Metric Code: 6PK1283 Number Of Ribs: 6 Outside Length: 51.13" Pitch Length: 50.5" Thickness: 0.18" Type: K Micro Rib Width: 6 Rib