Specification Brand : Jason Industrial BulletPoint1 : Conforms to RMA Engineering Standard BulletPoint2 : Comparable to Gates, Browning, Goodyear, Dayco, Bando, PIX, Bestorq, Grainger BulletPoint3 : Timing belts are measured by Length, Tooth Pitch, then width. The first number is the length, the letter (and sometimes number) refer to the tooth and the final number is the width. Some are measured in mm and others in inches. If you are not matching a belt number, you should contact us for clarification prior to an order. BulletPoint4 : Teeth: 140, Pitch Length: 28.00", Belt Width: .375", Tooth Style: (XL) 1/5" Pitch BulletPoint5 : RC 1/4 Quarter Scale Car 3/8 Wide 280xl Timing Belt WCM Pro1 Color : Black CompatibleDevices : Vacuum Cleaner ExternallyAssignedProductIdentifier : 9378907882809 ExternallyAssignedProductIdentifier1 : 0650003359140 ExternallyAssignedProductIdentifier2 : 650003359140 IncludedComponents : Belt ItemName : Jason Industrial 280XL037 1/5-inch (XL) Pitch standard timing Belt ItemPackageDimensions_Height : 0.79 inches ItemPackageDimensions_Length : 12 inches ItemPackageDimensions_Width : 12 inches ItemPackageQuantity : 1 ItemTypeKeyword : industrial-timing-belts Manufacturer : Jason Industrial Material : Rubber Material1 : Neoprene Material2 : Rubber ModelNumber : 704-8M-20 NumberOfBoxes : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : 280XL037 ProductDescription : Jason 280XL-037 Standard Timing Belt, Belt Length: 28.0 in, Pitch Code: XL, Width: 0.37 in, No. of Teeth: 33, Approx. Weight: 0.043 lbs ProductSiteLaunchDate : 2012-11-19T21:57:33.330Z Size : Width 6mm Style : T10-1320 SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 26111800