Specification Brand : Befenybay BulletPoint1 : Size:L30mm x D25mm/1.18inch x 0.98inch( L*D) Bore Diameter: 6.35mm to 8mm / 0.25inch to 0.31inch BulletPoint10 : 【Expert After-Sales Support】Need help with installation or troubleshooting? Don't hesitate to reach out. Our dedicated Creality engineers are available to provide personalized support and guidance whenever you need it. BulletPoint2 : Material: Aluminum alloy Type: Plum shaped BulletPoint3 : Super torque can absorb vibration, appropriate a large torque transmission.High hardness,and excellent response,not easy to loosen BulletPoint4 : Flexibility of coupling shaft removes stress between the motor and driving components BulletPoint5 : The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc BulletPoint6 : 【6 Times Durability, Even Heating】The nozzle head is made of hardened steel (SKD11) material, with a Moh's hardness of 7.8, to provide a sixfold lifespan. Copper alloy with a thermal conductivity coefficient of 330W/mK ensures even heating BulletPoint7 : 【Tight Fit, No leakage】Tightly fit joints effectively prevent filament leakage during printing BulletPoint8 : 【Smooth Inner Walls, No Blockage】Inner hole roughness Ra<0.4, ensuring smooth filament feeding. BulletPoint9 : 【Precision Machining, Impeccable Craftsmanship】No burrs at the opening, stable printing with reduced clogging. Color : Black CompatibleDevices1 : Laptop CompatibleDevices2 : Smartphone CompatibleMaterial : Stainless Steel ConnectivityTechnology : USB ExteriorFinish : Silver ExternallyAssignedProductIdentifier1 : 883521949016 ExternallyAssignedProductIdentifier2 : 0883521949016 GpsrSafetyAttestation : 1 IncludedComponents : Creality Ender 3 V3 Plus Ceramic Hotend Kit, ItemForm : Stick ItemName : Befenybay 2PCS 6.35mm to 8mm Aluminium Plum Flexible Shaft Coupling D25 L30 6.35x8mm Connector Flexible Coupler for 3D Printer CNC Machine and Servo Stepped Motor(6.35x8mm) ItemPackageDimensions_Height : 9.906 centimeters ItemPackageDimensions_Length : 2.286 centimeters ItemPackageDimensions_Width : 5.588 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-accessories Manufacturer : befenybay Material : Aluminum MetalType : Aluminum ModelNumber : BE-048-2-fba NumberOfBoxes : 1 NumberOfItems : 2 NumberOfPieces : 2 PartNumber : BE-048-2-fba ProductDescription : PLEASE NOTE: The shaft coupler is not elastic, can not modify the concentricity.Shaft must be located in a straight line. If your equipment is eccentric already, then it will make noise and cause off-centering. Please be cautious before your final purchasing, thank you. Product Name: Shaft Plum Coupling Type: Plum Shaped Shaft Usage: 6.35mm to 8mm / 0.25inch to 0.31inch Size: :L30mm x D25mm/1.18inch x 0.98inch( L*D) Material: Aluminum Alloy,Polyurethane Main Color: Silver Tone,Red Weight: 31.4g x 2pcs The shaft couplers are mainly used for CNC machines,servo motors, spindle, step motor etc Package Content: 2 x Shaft Plum coupling 1x Allen Key ProductSiteLaunchDate : 2019-07-31T07:00:00.000Z Size : D25 L30 Style : 6.35-8mm SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 26111500 Viscosity : High WarrantyDescription : One-year warranty, Lifetime technical support WaterResistanceLevel : not_water_resistant