This bundle includes Rockgear N-Connector, 63 mm, Black.
From RockGear:
The RockBoard N-Connector is a super-compact pedal connector. Only 19 millimeters (12/16) long, it makes your pedals come even closer together and the shortest possible cable path is connecting them. The N-Connector couples pedals with side-mounted jacks and helps keep your setup tidy and neat looking.

• offset pedal connector
• shortest possible distance between pedals
• connects offset side-mounted jacks
• suitable for pedals with walls angled 90° to the floor
• 6.3 mm mono audio plugs on both sides
• length (plug to plug) 19 mm (12/16)
• black