Specification Brand : MKSIWSA BulletPoint1 : The gear is made of 45# steel, and the surface maybe with rust on some hardened gears. BulletPoint2 : Package List: 1pc Spur Gear 2M 30Teeth BulletPoint3 : Tooth surface treatment: high frequency quenching BulletPoint4 : Pressure angle: 20 degree BulletPoint5 : note: There are errors in manual measurement,the size are for reference only. Color : 30 Teeth ExternallyAssignedProductIdentifier : 9406094914222 ItemName : MKSIWSA Industry 1PC Convex Gear Pinion 2 Module 30Teeth 10mm Hole Carbon Steel Convex Gear Pinion (Hole Diameter : 10mm, Number of Teeth : 30 Teeth) ItemPackageQuantity : 1 ItemTypeKeyword : rack-and-pinion-gears Manufacturer : SUOFEILAIMU-US Material : Metal NumberOfItems : 1 PartNumber : SUOFEILAIMU-123 ProductDescription : The gear is made of 45# steel, and the surface maybe with rust on some hardened gears. Package List: 1pc Spur Gear 2M 30Teeth Tooth surface treatment: high frequency quenching Pressure angle: 20 degree note: There are errors in manual measurement,the size are for reference only. ProductSiteLaunchDate : 2022-02-18T05:40:15.911Z Size : 10mm Style : Manual UnitCount : 1 UnspscCode : 52140000