Hydrobat Seconds may have chips at the edge, nicks, or just don't look pretty. They can be used as is or sanded down to practically perfect. They still work just like regular Hydrobats and wick away moisture from your pots for easy release. The set of 8.5" Hydrobat Seconds needs a 10" to 6" adapter to fit a regular wheelhead with bat pins spaced 10" apart.