This is a A-635K6 Micro-Rib V-Belt (63.5") PN: 635K6Main Description As Following : A-635K6 Micro-Rib V-Belt (63.5") P.N: 635K6 6 Rib X 63.5 K Micro Rib Polyester CordColor: BlackLength: 63.5Material: Polyester CordMetric Code: 6PK1613Number Of Ribs: 6Outside Length: 64.13"Pitch Length: 63.5"Thickness: 0.18Type: K Micro RibWidth: 6 Rib Replaces: A-87366407 FORD , Crossed From: GATK060637 , , K060635 GATES , 25060635 , , 4060635 GOODYEAR , 5060635 DAYCO , 6PK1610 A & I METRIC BELTS , 6PK1611 A & I METRIC BELTS , 6PK1612 A & I METRIC BELTS , 6PK1613 A & I METRIC BELTS , 6PK1614 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 63.5" K Micro Rib Polyester Cord Color: Black Length: 63.5" Material: Polyester Cord Metric Code: 6PK1613 Number Of Ribs: 6 Outside Length: 64.13" Pitch Length: 63.5" Thickness: 0.18" Type: K Micro Rib Width: 6 Rib