TOOGOO(R) 3.2mm x 4mm Coupler Connector Adapter for RC Airplane Boat Motor Product Name : Motor Coupler Connector;Type : 3.2mm to 4mm Total Size : 2x0.9cm;Main Color : Gold Tone Material : Metal, Plastic Weight : 11g Package Content : 1 x Motor Coupler Connector,1 x L Shape Shaft,Several Mount Accessories