To simplify dinghy towing, the Roadmaster 9284-2 Combo Kit combines the popular accessories you need matched to your tow bar. This combo kit is specifically designed for the Nighthawk and Sterling tow bars with the most commonly purchased accessories all in one kit.9284-2 Combo Kit contains:• Towed car wiring harness kit with four 'Hy-Power' diodes.• Heavy-duty, marine-grade vinyl cover to protect your tow bar.• A receiver hitch lock to secure your tow bar into the receiver.• A two-pack of keyed alike padlocks to secure the tow bar base pins to the towed vehicle.• A can of silicone spray tow bar lubricant. Can be used wherever you want a dry lubricant that will not attract dirt or debris.• A marine-grade vinyl storage bag for all your accessories. Note: This kit does NOT contain safety cables or a power cord since they come included with both the Nighthawk and Sterling tow bars. Receiver hitch lock to secure your tow bar into the receiver Can of silicone spray tow bar lubricant Marine-grade vinyl storage bag for all your accessories | Roadmaster 9284-2 Combo Kit for Nighthawk and Sterling Tow Bars