1up Racing's LowPro 4mm Bullet Plugs feature an oversize 6 point contact for ultra Low resistance and a very secure fit. The great looking Low Profile head design includes a deep recess area to make easy work of creating strong and beautiful solder joints with any 11-16 gauge wire. Only 15mm in total length, these fit all LiPo batteries with 4mm inputs and offer reduced weight when compared to full length bullet plugs.