This is a A-B125 Classical V-Belt (5/8" X 128") PN: B125Main Description As Following : A-B125 Classical V-Belt (5/8" X 128") P.N: B125 5/8 X 128 B Section Polyester CordColor: BlackDepth: 13/32"Length: 128Material: Polyester CordOC Length: 5/8" X 128"Thickness: 0.381Top Width: 5/8"Type: B SectionWidth: 5/8 Replaces: A-K13721 MACDON , Crossed From: 156444C1 CASE-IH , 5L1280 JASON , 523107X ENCORE , 582450R1 CASE-IH , 606719R1 CASE-IH , 754CS CASE-IH Found in Section & Models : Industrial Belts > B-Section Wrapped Belt, (Miscellaneous) (UNDEFINED): SEVERAL, Lawn & Garden & Specialty Belts > RIDING MOWER, Encore MOWER, WALK-BEHIND: 52K550R PRO-LINE, Lawn & Garden & Specialty Belts > WALK-BEHIND MOWER, Encore MOWER, WALK-BEHIND: 52K550R PRO-LINE (Deck Drive 52" w/o Lift Kit), Sunbelt - Belts > Black Belts, (Miscellaneous) (UNDEFINED): SEVERAL, Encore MOWER, WALK-BEHIND: 52K550R PRO-LINE (Deck Drive 52" w/o Lift Kit) Associated Items : New Also This is An Aftermarket Product And : 5/8" x 128" B Section Polyester Cord Color: Black Depth: 13/32" Length: 128" Material: Polyester Cord OC Length: 5/8" X 128" Thickness: 0.381" Top Width: 5/8" Type: B Section Width: 5/8"