Hinged post (4015-05) clamps to rail and can be padlocked. Amber flashing solar light with bolt-on bracket.
 
Solar light with 360° visibility. 
Flashes 60 times per minute. Brilliant 6 LED light visible for a mile. 
Solar battery operates 8 consecutive nights without recharging. 
Fully recharges with 2 sunny hours or 8 cloudy hours. 
External on/off push-button conserves battery. 
Gravity switch turns off light when light is turned to 45° or greater. 
Aluminum bracket.
Weight with bracket 5 lbs.