Specification Brand : Coavoo BulletPoint1 : 2 Pack coupler coupling, the bore hole for the stepper servo motor shaft 6.35mm, for ball screw end 10mm, OD 30mm, total length 40mm, always with the ballscrew SFU1604 SFU1605 SFU1610 BulletPoint2 : The coupler dimensions is standard, we can make the size as your requirements for customization, including the bore diameter for the motor shaft, and the hole diameter for the ball screw; we also have other styles to choose about the OD and total length, please message us if you need BulletPoint3 : The shaft coupling has bigger outer diameter, so with higher torque, higher rigidity, good vibration resistance, flexible response and durability in removes stress between the motor and driving components BulletPoint4 : Shaft Coupler Material: Aluminum alloy, Surface oxidation treatment; Type: Plum shaped BulletPoint5 : Widely Used:The shaft couplers are widely used for stepper motor, servo motors, spindle as the cnc ball screw, lead screw parts for the 3d printer router engraving milling machine ConnectorType : Coupling ExternallyAssignedProductIdentifier : 9331526622157 ItemName : Coavoo Pulm Flexible Coupling Coupler 6.35mm to 10mm 2PCS, Aluminum Flexible Jaw Spider Plum Coupling D30L40 Connector for 3D Printer CNC Machine and Stepped Servo Motor ItemPackageDimensions_Height : 6.8072 centimeters ItemPackageDimensions_Length : 3.4036 centimeters ItemPackageDimensions_Width : 4.8006 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spider-couplings Manufacturer : Coavoo Material : Aluminum ModelNumber : CO-2-LZQ-D30L40-D6.35D10 NumberOfItems : 2 PartNumber : CO-2-LZQ-D30L40-D6.35D10 ProductDescription : Brand: Coavoo The package includes: 2 Pack coupling / coupler ProductSiteLaunchDate : 2022-11-09T09:16:35.205Z Size : 2Pcs D6.35D10 Coupler Style : Parts SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 26111500