Specification AgeRangeDescription : adult Brand : Xzeit BulletPoint1 : 0.5M 12T; Number of teeth: 12; Modulus: 0.5 BulletPoint2 : Inner hole: 1.98 / 2.02 / 2.5 / 2.98 BulletPoint3 : Total thickness: 3/5 mm BulletPoint4 : Maximum outer diameter: 7 mm BulletPoint5 : After strict manufacturing process, made of high quality brass material, hard and durable, has long service life.Small and light, easy to carry and convenient for installation, has good performance. Color : 12 Teeth ExternallyAssignedProductIdentifier : 6435659371258 ExternallyAssignedProductIdentifier1 : 8295956943927 ExternallyAssignedProductIdentifier2 : 8295956943064 ItemName : Motor Brass Pinion Gear,Tooth Gear, 10x 0.5M Brass Pinions 12T 1.98/2.98 2MM 3MM Hole Copper Gears G-S (Hole Diameter : 2.5mm T 3MM, Number of Teeth : 12 Teeth) (Color : 12 Teeth, Size : Hole Thicknes ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemShape : Square ItemTypeKeyword : gear-stock-and-pinion-wire Manufacturer : Xzeit Material : Brass ModelName : Xzeit ModelNumber : Xzeit NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : Xzeit ProductDescription : Our shop is based on the principle of "service and quality first" and we look forward to welcoming every customer.Small module gear is used for toy accessories, for RC model , for mini cars, for remote control aircraft etc.How to calculate the calculation of gear? (for reference only)Gear module M = outer diameter ÷(number of teeth +2)Outside diameter = Gear module ×(number of teeth +2)Thank you for your visit, any problems can be contacted and resolved in person with the shop! ProductSiteLaunchDate : 2023-11-05T13:23:31.483Z Size : 1.98mm T 3MM Style : Toothbrush UnitCount : 1