I ordered this woo because the add stated they had a 4" to 10" variety of boards. Since I could use several different sizes I didn't request any certain size. I expected to receive a variety of sizes but instead I received 17 boards all under 5"
Make sure you state exactly the size you want or you will get what they want to get rid of first. I wrote and complained but I never even got a reply. So much for 100% guarantee.
Familiarity: I've used it once or twice