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
Miniature Slip Ring Connector, 22mm, 2-36 Wires, 2A/5A/10A/30A | ATO.com
SENRISE Conductive Slip Ring 2 Wires- 8 Wires Collector Ring Rotating Connector Electrical Contact Commutator - Walmart.com
The Basics of Slip Ring Electrical Connectors You Should Know About