I measured one rather square piece at 18". Some would LONGER but more NARROW! Like I said: L@@K!!
MUST PURCHASE AT LEAST 10 pieces. If you take 10 right off the top of the stack, they will only cost you $10. If you want to pick and choose, they will be $3 each, cuz I know you will pick the LARGEST ones :).
They are NICE pieces. Most are what I call THIN, but a few are THICK.