WunderBlock - Hard - Slow Wearing (Box of 100)This is the second version of the "WunderBlock"! While keeping the "WunderBlock Soft Fast Wearing" block we also have had the needs and requests to have a harder and slower wearing block These blocks have been tested, and after 1 month, "WunderBlock" is still able to be read on the plastic. This harder block is ideal for high wear herds, or cows that need just a little extra time to heal. The WunderBlock measures: 5" long, 2 3 16 wide, 3 4" thick. The