Genset Accessories -Aluminum Flexible Shaft Coupling Rigid Coupling Motor Coupler 2-3-17mm Highlights Generic Brand Aluminum Flexible Shaft Coupling Rigid Coupling Motor Coupler 2-3-17mm Description: Manufactured made of aluminum alloy material to reduce inertia Rigid coupling, high torque with stiffness, low inertia and excellent sensitivity No rotation gap, elastic action can compensate for symmetrical angular misalignment Maintenance free, oil resistant and corrosion-resistant Suitable for model car, ship model, hardware, mold, mechanical situations, etc. Specification: Size (DxL): approx. 12x20mm/0.47x0.79inch; Color: Dark Red Size (DxL): approx. 14x25mm/0.55x0.98inch; Color: Dark Blue / Water Blue Size (DxL): approx. 16x25mm/0.63x0.98inch; Color: Water Blue Screw Hole Diameter: 4mm Transfer Point Diameter: multiple specification Pore Diameter Tolerance: +0.02mm "5-6mm" model means one end is 5mm pore diameter, the other is 6mm Size Chart: Model (Pore Diameter): 2-2mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 2-3mm, DxW: 12x20mm, Color: Dark Red Model (Diameter Pore): 2-3.17mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 2-4mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 2.3-4mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 3-3mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 3-4mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 3-5mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 3.17-4mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 3.17-5mm, DxW: 12x20mm, Color: Dark Red Model (Pore Diameter): 4- 4mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 4-6mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 4-7mm, DxL: 14x25mm, Color: Dark Blue Model (Pore Diameter): ): 4-8mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 5-5mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 5-6mm, DxL: 14x25mm, Color: Dark Blue Model (Pore Diameter): 5-6.35mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 5-7mm, DxW: 14x25mm, Color: Dark Blue Model (Pore Diameter): 5-8mm, DxW: 14x25mm , Color: Dark Blue Model (Pore Diameter): 6-6mm, DxW: 14x25mm, Color: Water Blue Model (Pore Diameter): 6-7mm, DxW: 14x25mm, Color: Water Blue Model (Pore Diameter): 6.35-6.35 mm, DxW: 14x25mm, Colour: Water Blue Model (Pore Diameter): 6.35-8mm, DxW: 14x25mm, Colour: Water Blue Model (Pore Diameter): 6.35-10mm, DxW: 16x25mm, Colour: Water Blue Model (Pore Diameter): ): 8-8mm, DxW: 14x25mm, Color: Water Blue Model (Pore Diameter): 8-10mm, DxW: 16x25mm, Color: Water Blue Package includes: 1 piece motor coupling 1 piece wrench 4 pieces Screw Note: Please allow 1-3mm differs due to manual measurement. Due to different display and different light, the picture may not reflect the actual color of the item. Thank you for understanding