Sirui screw for quick-release plate with 1/4 inch fold-out ironing silver (fits only SIRUI TY-50, TY-60, TY-70, TY-70S, TY-50X, 60X TY) (Accessories)
Holds, nevertheless one should not forget, they tightened occasionally. The price I find it very steep and only through Amazon Plus offer also. Almost 5 for a screw and then it is too much to ask, to put them in an envelope ?! It will be offered and