Specification Brand : Garosa BulletPoint1 : Adopt aluminum alloy, excellently machined, finished smoothly BulletPoint2 : This pulley is for 10mm width 2GT timing belt BulletPoint3 : Comes total 10pcs belt pulleys in one bag which you may use a long time BulletPoint4 : Perfect choice for building a 3D printer or similar projects BulletPoint5 : Also good replacement parts for old or broken 3D printer belt pulley Color : as described ItemName : 10pcs 3D Printer 2GT 20 Tooth Idle Pulley Belt Pulley Timing Pulley Without Teeth for Belt Width 10MM ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : timing-pulleys Manufacturer : Garosa ModelNumber : Garosag4npmcr62d NumberOfItems : 2 PartNumber : Garosag4npmcr62d ProductDescription : Specifications: Material: Aluminum Alloy Type: Smooth without teeth Height: 13mm / 0.511 Outer Diameter: 18mm / 0.708 Inner Diameter: 5mm / 0.196 Belt Width: 10mm / 0.393 Weight: 24g(approx.) (ps:This value is the weight of one product; This value is the size of one product;) Package Includes: 10 x Belt Pulleys Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. New-style and old-style are shipped randomly.