Specification Brand : Miskall BulletPoint1 : The coupling uses the tightening force of countersunk bolts to shrink the slit and clamp the shaft tightly. BulletPoint2 : The coupling is made of aluminum alloy material, surface oxidation treatment, sturdy and durable. BulletPoint3 : The polyurethane elastomer connection in the middle has good waterproof and insulating performance. BulletPoint4 : The coupling has a small and compact structure, is convenient to fix and disassemble, and will not cause damage to the shaft. BulletPoint5 : The coupling has high accuracy and is widely used in shaft transmission systems of various mechanical equipment. ExternallyAssignedProductIdentifier : 9124799837744 ExternallyAssignedProductIdentifier1 : 0775829188290 ExternallyAssignedProductIdentifier2 : 775829188290 FinishType : Finish ItemName : 3Pcs Flexible Coupler Aluminum Alloy Ball Screw Coupling Kit Motor Accessories GMC‑25x30 for Mechanical Equipment (8mm / 0.3in, 10mm / 0.4in) ItemPackageQuantity : 1 ItemTypeKeyword : multi-flex-couplings Manufacturer : Miskall Material : Metal NumberOfItems : 1 PartNumber : Miskall25su8ixwrn-12 ProductDescription : Specification: Item Type: Flexible Coupler Model: GMC-25 x 30 Quantity: 3pcs Outer Diameter: Approx. 25mm / 1in Length: Approx. 30mm / 1.2in Inner Hole: Approx. 8mm / 0.3in, 8mm / 0.3in 8mm / 0.3in, 10mm / 0.4in 10mm / 0.4in, 10mm / 0.4in 12mm / 0.5in, 12mm / 0.5in Tightening Screw Torsion: 1.5N.M Rated Torsion: 10N.M Allowable Eccentricity: 0.1mm Allowable Deflection Angle: 1° Allowable Axial Deviation: ±0.2mm Maximum Speed: 10000PM Static Torsional Stiffness: 90N.M/RAD Moment Of Inertia: 5.0 x 10^-6KG.M2 Material: Strength aluminum alloy Elastomer Material: Polyurethane Surface Treatment: Anodic oxidation treatment Features: Intermediate elastomer connection Absorb vibration, compensate radial, angular and shaft deviation Oil resistance and electrical insulation Clockwise and counterclockwise rotation characteristics are exactly the same There are three different hardness elastomers Clamping screw fixing