Everything you need to make caverns, tunnels and shelters with Excavator Clay Substrate! Kit includes: 12 lbs. Excavator substrate, 7 Tunnel Tube, 5 Round Balloons (2), 9 Round Balloons (2), Balloon attachment assembly, 10 Shovel, Excavator Mixing Bag, Full Installation Booklet. br/>Sold in Quantity of: 1