Specification Brand : Coavoo BulletPoint : This item is used and in working condition. BulletPoint1 : 1 Pack coupler coupling, the bore hole for the stepper servo motor shaft 14mm, for ball screw end 17mm, OD 40mm, total length 55mm, always with the ballscrew SFU2504 SFU2505 SFU2510 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 Color : Black ConnectorType : Coupling DriveSystem : Slotted ExteriorFinish : Steel ExternallyAssignedProductIdentifier1 : 0702235519202 ExternallyAssignedProductIdentifier2 : 702235519202 IncludedComponents : Coupling ItemName : Coavoo Pulm Flexible Coupling Coupler 14mm to 17mm 1PCS, Aluminum Flexible Jaw Spider Plum Coupling D40L55 Connector for 3D Printer CNC Machine and Stepped Servo Motor ItemPackageDimensions_Height : 7.0104 centimeters ItemPackageDimensions_Length : 4.8006 centimeters ItemPackageDimensions_Width : 4.9022 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spider-couplings Manufacturer : Coavoo Material : Aluminum MetalType : Alloy Steel ModelNumber : CO-LZQ-D40L55-D14D17 NumberOfItems : 1 NumberOfPieces : 2 PartNumber : CO-LZQ-D40L55-D14D17 ProductDescription : Brand: Coavoo The package includes: 1 Pack coupling / coupler ProductSiteLaunchDate : 2022-11-09T09:09:46.972Z Size : 1Pcs D14D17 Coupler Style : Parts SupplierDeclaredDgHzRegulation : not_applicable