From Amazon
NOCO GC003 X-Connect 12V Dual-Size Male Plug Accessory for NOCO Genius Smart Battery Chargers
Halfords
Noco 12V Plug Connector
The Green Spark Plug
NOCO 12V Male Plug Charging Cable Auxiliary Plug Charger GC003
DIY Car Service Parts
NOCO 12V Male Plug Charging Cable Auxiliary Plug Charger GC003