1、100% brand new and high quality. 2、Excellent load capacity, long service life, it is safe and reliable. 3、Simple structure and it is convenient to maintain and inspect. 4、Stable work with good vibration damping, cushioning and electrical insulation. 5、Widely used for shafting transmission of various mechanical devices, such as water pumps, fans, compressors and hydraulic machinery, etc. Features: 1. 100% brand new and high quality. 2. Excellent load capacity, long service life, it is safe and reliable. 3. Simple structure and it is convenient to maintain and inspect. 4. Stable work with good vibration damping, cushioning and electrical insulation. 5. Widely used for shafting transmission of various mechanical devices, such as water pumps, fans, compressors and hydraulic machinery, etc. Specification: Condition: 100% Brand New Model: D40 L50 Material: Aluminum Alloy Weight: Approx. 128g / 4.5oz Outer Diameter: Approx. 40mm / 1.6in Length: Approx. 55mm / 2.2in Inner Hole Diameter: Approx. 14 x 14mm / 0.6 x 0.6in Package List: 1 x Coupling Coupler Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.