This custom built flash bracket is made from 6061 T6 aluminum with a bead-blasted finish. I have used this bracket with a Canon 70/200 f/2.8 and a Canon 300mm f/4 that have a rotating tripod ring, allthough it will fit most lens of this type with a tripod ring. It allows the flash to stay in a vertical position. The bracket has a Q/R Manfrotto 200PL plate for Manfrotto heads WITH the RC2 mount such as 468MGRC2, 322RC2, 488RC2, 486RC2, 484RC2, 222, etc. It works very well and the only reason that I am selling it is the fact that I no longer use a Manfrotto tripod. It also works very well on a Manfrotto monopod with the monopod 234RC quick release tilt top. I will let it go for $100.00 plus shipping.