All sturdy. Second one down we don't have much left.  top one we use on all Morse Pieces.   Nasreen necklace size charm shown.

These are super quick pictures with terrible lighting but hopefully they show the thickness difference in the cords and all beads. Our "guy" listing's default size opens to 10.5" vs our other listings opening to...

   

Quick picture here below with pretty bad lighting but basically comparing our 2 bead sizes side to side. The large ones are about 25% larger than our usual smaller round beads. <33 KD    

Numbers are a bit longer than letters in Morse but very much available. To keep things short and clean sometimes we will use a contrasting bead to represent a : or - in dates. Will...