Corner blocks are used when you need to turn a 90 degree outside corner or when you simply want to finish off the end of a wall with a rock face. These forms are 4” longer than the standard form to make up for the 4” of rock face on the end of the block to match the depth of the wall on the other corner. This form will create both a left and right facing block by just flipping the liner to the other side. The form is used with an “L” shaped liner that sits in the bottom and up one side of the form.