T-Works Quick Lock 4 & 5 mm Bullet Connecters
New from T-Works are these Quick Lock 4mm and 5mm Bullet Connecters. The screw lock design makes it easy to securely connect to the battery by hand or using a 2mm hex tool. With a larger connect surface giving less resistance and more efficient power delivery, the connecter set is available Red/Black for easy positive and negative connection identification while a Black/Black anodised colour option can be identified via the laser engraved +/- Polarity symbols.
Source: T-Works [rc-tworks.com]