Ni yo glazing bead

Thanks for posting. We have a number of glazing beads that have a similar end profile to yours. Start by looking at our 55-120, 55-180, and 55-203. See the diagrams below, carefully compare your old glazing's end profile to the dimensions listed, and let me know if you think one of these matches what you need.

Profile view of 55-120

Profile view of 55-180

Diagram of 55-203