Specification Brand : Hilitand BulletPoint1 : good replacement parts: They are good replacement parts for old or broken 3D printer belt pulley BulletPoint2 : different sizes to choose: There are toothed or toothless 2GT timing pulleys in different sizes that you can choose BulletPoint3 : Super high-grade: Adopt high-grade aluminum, excellently machined, finished smoothly BulletPoint4 : Improve work efficiency: choice for building a 3D printer or similar projects,Improve work efficiency. BulletPoint5 : total 5pcs belt pulleys: Comes total 5pcs belt pulleys in one bag which you may use for many projects ExternallyAssignedProductIdentifier1 : 794419250285 ExternallyAssignedProductIdentifier2 : 0794419250285 ItemName : Hilitand Timing Belt Pulley,5pcs 6 Different Sizes 2GT 6mm/10mm Wide Belt Timing Pulley 16T/20T 3mm/5mm Bore 3D Printer Accessary (W6mm, 20T, Bore 3, Toothless) ItemPackageDimensions_Height : 15.2 centimeters ItemPackageDimensions_Length : 1.6 centimeters ItemPackageDimensions_Width : 14.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : timing-pulleys Manufacturer : Hilitand Material : Aluminum NumberOfItems : 5 PartNumber : Hilitand ProductDescription : Specifications: Material: Aluminum Model: 2GT(GT2) Tooth Pitch: 2mm Type(Optional): Belt WidthBore SizeTooth 6mm3mm16T,Toothless 6mm3mm16T,Toothed 6mm3mm20T,Toothless 6mm3mm20T,Toothed 6mm5mm20T,Toothless 10mm5mm20T,Toothed Quantity: 5pcs