510 Adapter Connector DIY Spring 510 Connector With Floating Pin For E Cigarettes Mod Battery Vapor BoxFeatures: Type: Connector Used Connect Any Atomizer And 510 Battery. This is a 510 spring loaded firing pin connector has a 22mm base. The spring is made of stainless steel + brass and has no current, which means you don't have to worry about the spring when you pass a high current through it. It adds a stronger spring and a hole on the side of the center pin. This makes it easier to solder the positive lead to the center pin. Specification: Material: Metal Diameter: 22m/0.86 inchPackage Included: 1x 510 Battery ConnectorNote: 1. Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.