Feature: 1. CROSS SLIDER: Cross type slider coupling, sliding design, which can more effectively compensate for radial and angular deviations. 2. DURABLE MATERIAL: The coupler is made of high strength aluminum alloy, the block is made of PA66, with good corrosion resistance, electrical insulation. 3. HIGH TORSION: The rated torsion of the shaft coupling is 9N.M, which can absorb vibration, and has good responsiveness, not easy to loosen. 4. DETACHABLE TYPE: The flexible shaft coupler is detachable type, adopts clamping screw fastening method, making it easy to install and use. 5. WIDE APPLICATION: This flexible shaft coupling is mainly used for CNC machine tools, servo motors, stepper motors, spindles, etc., compact and durable. Specification: Item Type: Flexible Coupler Model: D40L50 Product Size: Approx. 40 x 50mm / 1.6 x 2in Rated Torsion: 9N.M Allowable Eccentricity: 2.4mm Allowable Deviation Angle: 3mm Maximum Speed: 3600rpm Static Torsion Stiffness: 520N.M/rad Commonly Use D1 D2 Shaft Diameter: 8mm, 9mm, 9.525mm, 10mm, 11mm, 12mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Thread: M5 Shaft Sleeve Material: High Strength Aluminum Alloy Plastic Block Material: PA66 Finish Treatment: Anodizing Treatment. Package List: 1 x Flexible Coupler