This is the Futaba 300mm Slim Extension with standard Futaba J plugs. FEATURES: Small diameter wire to help reduce weight Designed for small lightweight models requiring a standard Futaba connector extension Male J plug on one end, female J plug on the other INCLUDES: One 300mm Futaba J extension with slim lead wires REQUIRES: Servo and receiver with standard Futaba J plug SPECS: Length: 300mm (12") COMMENTS: This extension has standard Futaba J plugs and cannot be used with servos or receivers that have the micro plugs We beleive that this uses a 30 gauge wire. wm 11/02/05 ir/jxs updated jpg 2/12/09