2/4//6/8/12/18/24/36 Channel Micro Rotate Slip Ring 2A Diameter 12/15/22mm For RC Excavator Model DIY PTZ Gimbal Electric Collector Rings Rotating Speed: 250rpm(at most) Channel: 2/4/6/8/12/18/24/36 Channel(optional)/ 2A Current: 1~2A/channel Diameter: 12/15/22mm Rated voltage: 0~240v Working temperature:-40C~+80C Contact Material: Gold/Gold Compressive strength:=500V@50Hz between two channels Shell Materials: Engineering plastics Working life: =5 hundreds of thousands revolutions(depends on work speed,environment) 12 2, 4, 6 channel: 12 8, 12 channel: 12 18 channel: 22mm 2 channels: Package includes: 1 x slip ring