This is a A-770K6 Micro-Rib V-Belt (77") PN: 770K6Main Description As Following : A-770K6 Micro-Rib V-Belt (77") P.N: 770K6 6 Rib X 77 K Micro Rib Polyester CordColor: BlackLength: 77Material: Polyester CordMetric Code: 6PK1956Number Of Ribs: 6Outside Length: 77.63"Pitch Length: 77"Thickness: 0.18Type: K Micro RibWidth: 6 Rib Crossed From: GATKO60770 , , GATK060770 , , GAT060770 , , K060770 GATES , 25060770 , , 4060770 GOODYEAR , 5060770 DAYCO , 6PK1953 A & I METRIC BELTS , 6PK1954 A & I METRIC BELTS , 6PK1955 A & I METRIC BELTS , 6PK1956 A & I METRIC BELTS , 6PK1957 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 77" K Micro Rib Polyester Cord Color: Black Length: 77" Material: Polyester Cord Metric Code: 6PK1956 Number Of Ribs: 6 Outside Length: 77.63" Pitch Length: 77" Thickness: 0.18" Type: K Micro Rib Width: 6 Rib