Specification Brand : TB Woods BulletPoint : Price For: Each Overall Length: 88mm Size: L100 Item: Jaw Coupling Hub Outside Dia.: 65mm Material: Sintered Iron Keyway Size: 6mm x 2.8mm Bore Dia.: 19mm Country of Origin (subject to change): United States BulletPoint1 : Material: Aluminum alloy BulletPoint2 : Inner Size:10mm to 12mm BulletPoint3 : Outside Diameter:30mm; Length:35mm ExteriorFinish : Aluminum ExternallyAssignedProductIdentifier1 : 0749882168056 ExternallyAssignedProductIdentifier2 : 749882168056 ItemName : 1pcs D30L35 Inner Size 10mm to 12mm Plum Flexible Shaft Coupling Jaw Plum Coupling Shaft Coupler For Stepper Motor ItemPackageQuantity : 1 ItemTypeKeyword : multi-flex-couplings Manufacturer : Kylin E-Business Material : Aluminum MetalType : Aluminum ModelNumber : PD30L35C10-12 NumberOfItems : 1 PartNumber : PD30L35C10-12 ProductDescription : This package including: 1pcs D30L35 Inner Size 10mm to 12mm Plum Flexible Shaft Coupling Jaw Plum Coupling Shaft Coupler For Stepper Motor.These couplers are made of machined aluminum and have a spiral cut that makes them slightly flexible so they can be fit to two shafts even if they are not perfectly co-linear and will help reduce binding effects..uminum Alloy Flexible Clamping Couplings For Stepper Motor ProductSiteLaunchDate : 2017-09-18T09:40:55.133Z Size : D30L35 Style : 10mm x 12mm SupplierDeclaredDgHzRegulation : unknown UnitCount : 1