For glass and wood orbs, round stones and marbles.  The top is 13/16" diameter and the stopper is 1 1/2" tall.  The recess has nicely rounded edges, is 1/16" deep with a 3/8" non threaded hole for glass artists who like to insert a little of the mandrel for added gluing surface.

Adhesives recommended by glass and stoneworkers:
Hxtal is the very best, click here for info.
Loctite 349: optically clear, stong.  Hardware or Hobby shops.

$6.55 each
$6.15 per unit for buying at least 10
$5.75 per unit for buying at least 20
$5.25 per unit for buying at least 50

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