They are heavy and hard. They are supposed to be Koh Samui SS. First time growing ever #2 Open full-size image [3000 x 4000 pixels] Shroomok's choice on Amazon Ultra-Fine Food Grade Gypsum for Mushroo... Isopropyl Alcohol 70% - 1 gallon & a 32... VIVOSUN Heat Mat 10"x 20.75" with Digita... Kaffe Coffee Grinder Isopropyl Alcohol 70% USP Grade - 4 X 1... BRF Jars Brown Rice Flour Mushroom Subst... HiMedia RM001-100G Peptone, Bacteriologi... KIKOMO Submersible LED Lights with Remot... Semiconductor Refrigeration Cooler Modul... Pressure Cooker & Canner, 3 PSI Settings... Food Dehydrator Machine, Digital Timer -... Outdoor/Indoor Smart Plug Smart Home - 2... Your comment Post comment