O-FLASH Ring Flash Adapter for Canon 580EX/580EX-II with 5D/40D/30D/20D/10D

- Model#: F170 - Outer diameter: 19cm - Inner diameter: 10.9cm - Center to tube center: 17cm - This O-Flash unit is a unique adapter for your hot-shoe flash unit designed to replicate the lighting effect produced by traditional, expensive, and heavy powered studio ring flash units - The most best tool for macro photography - Potable and lightweight, easy to install - Support Canon 580EX/580EX II/5D/40D/30D/20D/10D Dimensions: 11.81 in x 7.28 in x 2.64 in Weight: 24.41 oz