 "Canon Speedlite 600EX II-RT - hot-shoe clip-on flash" Flashes & Accessories CDW.com " Canon flash 1177C002 Lights
"The Speedlite 600EX II-RT delivers impressive power, responsive performance and advanced, wireless communication for those who demand the very best in flash photography. Featuring improved continuous performance up to 2.0x faster than its predecessor, the Speedlite 600EX II-RT performs at a phenomenal speed, and reliably at that - Quick Flash settings and a flash-readiness indicator help ensure priority shutter operation, even when the flash isn't fully recharged. It's also built for fast, convenient use virtually anywhere for any situation, with improved combination button and dial controls, a refined dust- and water-resistant body and accessories tailor-made for enhanced lighting effects. For speedy and comprehensive flash photography on the go, the Speedlite 600EX II-RT delivers portable, professional performance with ease." 
 "360 Degree Flash Shoe Holder Mount Bracket for Video Lights & Microphones, Hot Base #5"
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The main point for this Mount is the head can be round at 360 degree, you can use it at any point of view, it's very convenient to use. It can be screwed into your lightstand or mounted onto a standard hotshoe. " 