The Letter Tet(or Tes) has a size of 3X3 kulmusim. The left head of the Tes should look like the head of a Zayin, having completely squared corners and 3 Tagin on top of it. The lower left corner of the Tes should be squared as well. However, the lower right corner should be rounded. The right head of the Tes should curve inside the Tes, not far enough to touch the base of the Tes, but rather enough so that it's clear that it is curved inwards. The two heads of the Tes should not touch each other, as this would make it invalid.