EXCEEDCRAFT's Oohiratake (Pleurotus ostreatus) Mycelial Block LEVIN-G3500SP This mycelial block has a proven track record of producing giant stag beetles (record holders). It is a high-quality mycelial block recommended for those aiming for Guinness-sized specimens, and is currently used by Guinness breeders. You can repack it into poly bottles or glass bottles to use as a mycelial bottle. LEVIN-G3500SP Oohiratake (Pleurotus ostreatus) Mycelial Block 3500cc A high-nutrition product of LEVIN-G substrate, recommended for the first bottle in breeding. Many individuals from large bloodlines will exceed 30g with a single bottle. *This is the price for one block. If you wish to add more, please let me know in the comments. There may be oversights due to amateur inspection. Please purchase only if you understand this.