This umbrella rib tip was tested on fiber glass ribs with a diameter of 3.0mm (please measure your umbrella's rib with a calliper before you buy this product, it may not fit!).
Strong & flexible as well as transparent detail fits perfectly and replace a sew-in tip if you have lost one.
The iron and plated versions fit a 2.5 or 2.6mm rib, not a 3.0mm rib (I had to use a drill to widen the pit before it could fit a 3mm rib).
My umbrella, as seen on photo, was made by H.DUE.O
but is not on catalogue any longer. Different umbrellas will have different rib diameters. The main photograph shows the original tips (O), the iron print (I) and the transparent detail print (T).