Grodan's Pargro RW103705 Quick Drain Biggie is large enough to grow out most vegetables and some fruits for the entire lifespan of the plant. It features the driest rockwool on the market and a 1.5-inch hole to place a starter plug perfectly. When your starter plug has outgrown its home, showing three leaves, or roots reaching one inch below the cube, the Biggie block is happy to receive the transplant. Quick Drain Biggie is sold by the case with instructions on the wrapping. Hand water or use with drippers or in Ebb and Flow (Flood) systems. Contains 24 blocks per case.