Slip Ring Rotary Connector 8 | Electric Slipring Connector | Slip Ring Hollow Shaft - Parts & Accs - Aliexpress
Slip Rings From Rotary Systems, Inc. Made in The USA
Taidacent Hollow Slip Ring Rotary Electrical Contact 2/4/6/12 Wires Collector Ring Conductive Electric Motor Slip Ring Rotating Connector (6 Wires 10A Inner Hole 12.7mm OD 54mm) - Amazon.com
Slip ring connector for rotating electrical connection - YouTube