Specification AgeRangeDescription : Kid Brand : HJZ-Drive BulletPoint : Rollers, bearings, belts and much more - 1614-ZZ Shielded Radial Ball Bearing 3/8 ID X 1-1/8 OD X 3/8 Wide For SpinCo - CNZV156A836 BulletPoint1 : Modulus: 1 Mod; Number of tooth: 12-150tooth BulletPoint2 : Material: 45 # steel BulletPoint3 : Tooth thickness: 10MM BulletPoint4 : Bore: rough machining, different batchs, the bore will be a slight different BulletPoint5 : Package Content : 20 x Plastic Gear Color : Black EducationalObjective : 1 ExternallyAssignedProductIdentifier : 9410999285707 ExternallyAssignedProductIdentifier1 : 0654283058984 ExternallyAssignedProductIdentifier2 : 654283058984 IncludedComponents : no ItemName : 1 Mod 97T Spur Gear 45# Steel Motor Pinion Gear Thickness 10mm x 1Pcs (1Mod 97T) ItemPackageDimensions_Height : 0.63 centimeters ItemPackageDimensions_Length : 10.16 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spur-gears Manufacturer : HJZ-Drive ManufacturerMinimumAge : 168 Material : Alloy Steel ModelNumber : IF105 NumberOfItems : 1 NumberOfTeeth : 42 OperationMode : Manual PackageLevel : unit PartNumber : HJZ-Drive ProductDescription : Product Size: Spur Gear Modulus: 1 Mod Number of tooth: 12-150tooth Material: 45 # steel Tooth thickness: 10MM Bore: rough machining, different batchs, the bore will be a slight different Shape: flat without step (Note: for high precision gears, please think carefully, made by gear shaping process, there will be a slight eccentric phenomenon)