This item sold on December 10, 2012.
Dimensions variable between .75" and 1" in diameter
The pattern for this piece is taken from a book called "The Arts of the Sailor; Knotting, Splicing and Ropework" by Hervey Garrett Smith. It's a pattern for a thump or block mat- a mat made of rope that keeps the blocks (pulleys) and gear from slamming against the deck.
If they get wet guitar strings may eventually rust.