uxcell 3mm x 5mm Coupler Connector for RC Airplane Boat Motor Product Name : Motor Coupler Connector;Type : 3mm to 5mm Total Size : 2.5 x 0.9cm/1" x 0.35"(L*D);Main Color : Gold Tone Material : Metal, Plastic Weight : 10g Package Content : 1 x Motor Coupler Connector,Several Mount Accessories