Here we have 12 new drawstring /cord end caps, tips, stops, pulls. They are cone tapered, plastic, and amber colored with specs.

The larger is 1/2 inch - has a hole that will fit up to 3/16 cord; the hole is 5 mm. The outside dimensions are 1/2 x 1/2 inch.
 
The smaller is 3/8 inch and has a hole that will fit up to 1/8 cord.  The hole is 4 mm. The outside dimensions  are 3/8 x 3/8 inch

Check out my store for other drawstring, end caps & buttons.