Specification Brand : SUOFEILAIMU-PHONE CASE BulletPoint1 : High torsional rigidity,high response.Zero backlash.One slit cutting metal flexible coupling.Ultra high torsional rigidity,low inertia and excellent response degree. BulletPoint2 : Material:Metal BulletPoint3 : The structure is simple,easy to install,buffer,damping,convenient to disconnect. BulletPoint4 : The size is complete and the surface is smooth. BulletPoint5 : Connect servo motor,stepper motor,encoder,screw driving,machine,etc. ExteriorFinish : Metal ExternallyAssignedProductIdentifier : 8306042691599 ItemName : SUOFEILAIMU-PHONE CASE Metal Coupler Flexible Shaft Coupling for CNC Stepper Motor D25L30 5mm 6mm 6.35mm 7mm 8mm 9.5mm 10mm 12mm (Inner Diameter : 5mm x 10mm) ItemPackageQuantity : 1 ItemTypeKeyword : multi-flex-couplings Manufacturer : SUOFEILAIMU-US Material : Metal NumberOfItems : 1 PartNumber : SUOFEILAIMU-123 ProductDescription : Model:D25L30 The size you can choose: 4mm x 5mm 5mm x 5mm 5mm x 6mm 5mm x 6.35mm 5mm x 8mm 5mm x 10mm 5mm x 12mm 6mm x 6mm 6mm x 6.35mm 6mm x 8mm 6mm x 10mm 6mm x 12mm 6.35mm x 6.35m 6.35mm x 8mm 6.35mmx 9mm 6.35mm x 9.5mm 6.35mm x 10mm 6.35mm x 12mm 6.35mm x 12.7mm 7mm x 8mm 7mm x 10mm 8mm x 8mm 8mm x 10mm 8mm x 12mm 9.5mm x 9.5mm 9.5mm x 10mm 9.5mm x 12.7mm 10mm x 10mm 10mm x 12mm 12mm x 12mm Package Included:1 x Coupler ProductSiteLaunchDate : 2021-03-30T08:24:18.266Z Size : 5mm x 10mm