SIRUI TY-70 quick release plate (aluminum, 1/4 ", 39x70mm, 37.2g, Sliding Stopper, for SIRUI and Arca-Swiss) black (accessories)
I bought this for my release plate 300 telephoto lens and am excited about the fit. They will not budge on my ball head with Arca-Swiss system and when removing the lock washer of the spherical head engages immediately and the lens is still held secu
