The base features 2 angle iron pockets for 2"x2"x.25" or smaller angle and 1 T-Post pocket. One pocket ensures the angle iron is in the vertical position. The vertical position is for our reactive series targets. The angled position, which ensures the angle iron sits at an approximate 18 degree "lean" toward the shooter, ensures the correct angle when utilizing our dueling tree target systems. The T-Post pocket will support a T-Post at 90 degrees.