Wireless Flash Trigger for strobe/camera- 2 pairs

Yongnuo RF-603 II 16-Ch Wireless Flash Trigger for Canon 3-Pin Connection 1D/5D/7D/10D/20D/30D/40D/50D Cameras, 2.4GHz, 1/320sec Sync Speed Here is Amazon link and it is 65$ before tax. You can read specs there. https://www.amazon.ca/gp/product/B00HO0BYQS/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 I have two pairs. I can sell separately -one for 35 or two for 60$.