Condition: 100% Brand New Item Type: Coupling Material: Aluminum Alloy Model: GL?39 x 50?16 x 16 Outer Diameter: Approx. 39mm / 1.54in Length: Approx. 50mm / 1.97in Inner Diameter: Approx. 16mm / 0.63in1The whole body is made of aluminum alloy, light and strong, convenient to use. 2Widely used in all kinds of shaft transmission of mechanical device, such as the water pump (especially high power), chemical pump, fan, hydraulic machinery. 3Suitable for petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopters), ships power transmission system. 4Suitable for piston mechanical power transmission system, tracked vehicles, as well as generating set high power mechanical drive system, the dynamic balances after applied in transmission shafting were common. 5Quality assurance, easy and convenient to use, having long service life. 1 x Coupling