Specification AgeRangeDescription : adult Brand : HARFINGTON BulletPoint1 : Size - Modulus: 0.3; Outer Diameter: 3.8mm Gear Shaft, 9.5mm Gear Wheel; Inner Diameter: 0.98mm Gear Shaft, 4mm Gear Wheel; Gear Thickness: 4.1mm / 0.16"; Direction of Rotation: Right, Reduction rate: 30 : 1, Z1=1. BulletPoint2 : Material - The set is made of brass material, not easy to wear and tear, durable, and can last for a long time. BulletPoint3 : Feature - The gear wheel shaft set is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth. BulletPoint4 : Application - It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products. BulletPoint5 : Package Content - 1pcs x brass gear wheel and 1pcs x brass gear shaft. Color : Rod Bore 8mm ExternallyAssignedProductIdentifier : 5600631413993 ExternallyAssignedProductIdentifier1 : 781711099025 ExternallyAssignedProductIdentifier2 : 0781711099025 IncludedComponents : Worm Gear Oiler Pinion ItemName : HARFINGTON Worm Gear Set Wheel Shaft Brass 0.3 Modulus 30:1 Reduction Rate 4.1mm Gear Thickness Right Rotate Drive Gear Box for Small Motor ItemPackageDimensions_Height : 8.9 centimeters ItemPackageDimensions_Length : 1.7 centimeters ItemPackageDimensions_Width : 6.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : worm-gears Manufacturer : HARFINGTON Material : Brass ModelName : HLTTXS ModelNumber : hta220706hh0518 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfTeeth : 20 PartNumber : hta220706hh0518 ProductDescription : The set is made of brass material, not easy to wear and tear, durable, and can last for a long time. The gear wheel shaft set is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth. It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products.