Individual Duckbill 68 earth anchor. Can be used to anchor trees (3 needed per tree) or other objects such as trash cans sheds, etc. to the ground/ These duckbill anchors are even used by airports to anchor small planes to the tarmac. Model No# : M68-DB1 Holding Power in Normal Soil : 1,100 lbs. Wire Rope Length : 2.5 ft. Tree Caliper Size : up to 6"Maclean Power Systems