This is a A-AX21 Cogged Classical V-Belt (1/2" X 23") PN: AX21Main Description As Following : A-AX21 Cogged Classical V-Belt (1/2" X 23") P.N: AX21 1/2 X 23 A Section Cogged Polyester CordColor: BlackDepth: 5/16"Length: 23Material: Polyester CordOC Length: 1/2" X 23"Thickness: 0.3125Top Width: 1/2"Type: A Section CoggedWidth: 1/2 Found in Section & Models : Industrial Belts > AX-Section Cogged Belt, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : 1/2" x 23" A Section Cogged Polyester Cord Color: Black Depth: 5/16" Length: 23" Material: Polyester Cord OC Length: 1/2" X 23" Thickness: 0.3125" Top Width: 1/2" Type: A Section Cogged Width: 1/2"