Features: Premium Quality: Crafted with high-quality aluminum alloy and brass, these connectors have nice durability, offer exceptional conductivity, and are resistant to corrosion. Versatile Compatibility: Suitable for 1/10 scale off-road car, monsters truck, and remote-controlled forklifts, these connectors provide a reliable connection for various remote control vehicle. Easy Installation: Simply slide the heat sink handle onto the included low-profile bullets connector and secure it with the provided fixing screws for a quick and secure installation. Enhanced Performance: These connectors not only provide a reliable connection but also add additional shine to your charging cables and improve grip, enhancing overall performance. Polarity Identification: Each shipment includes 4 battery heat sink bullets connectors in red and black, allowing for easy differentiation of positive and negative poles. Specifications: Material: Aluminum Alloy+Brass Types: 5.0mm, 4.0mm, 3.5mm(optional) Quantity: 4PCS/Set Package Size: 130 * 90 * 30mm/ 5.1 * 3.5 * 1.2in Package Weight: 20g/ 0.7oz Packing List: 4 * Battery Heatsink Plugs