2pcs M4 Rigid Flange Coupling Motor Shaft Coupler Connector ID 12mm OD 18mm

Features: Made of premium iron material with electroplating, these couplers are sturdy and durable. A flange coupler is a kinds of special coupler that can fix a shaft on a flat surface. Electroplated iron, good corrosion resistance The coupler allows to mount other accessories on the shaft easily. This type of coupling is mostly used to couple electric motors. Specification: Material: Electroplated iron Inner diameter: 12mm 0.47in Outer diameter: 18mm 0.71in 4 holes: 4mm 0.16in Weight: 55g 1.9oz (approx.) Package list: 2 * Couplers 1 * Wrench 4 * Screws