Specification AgeRangeDescription : adult Brand : Xzeit BulletPoint1 : 12T Copper Gear: Gear parameters :(manual measurement) BulletPoint2 : Teeth: 12T; Gear width: 2.3 mm BulletPoint3 : Total high: 4 mm BulletPoint4 : Outer diameter: 4.9 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 : 6435659371104 ItemName : Xzeit Motor Brass Pinion Gear,Tooth Gear, 12T Metal Reduction Copper Gears 1.6mm Hole Diameter for Model Brass Gears G-S (Hole Diameter : 1.6mm, Number of Teeth : 12 Teeth) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemShape : Square ItemTypeKeyword : worm-gears 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 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 : 2023-11-05T13:23:41.913Z Size : 1.6mm UnitCount : 1