Mecate rein with a decorative tassel on each end, both the end you tie onto the headstall and the lead rope end. The knot on the tassels can be made in 2 different patterns, as shown in the pictures, and the whole tassels including the knots can be made with 2 colors for the knot pattern to be visible. If you rather want solid-colored tassels, simply choose the same color for tassel color 1 and 2 in the options above.
There are 2 rope dimensions to choose from, 10 and 14 mm (3/8" and 9/16"), depending on if you prefer a somewhat thinner and lighter mecate rein or a thicker and heavier one. The blue rein in the pictures is made out of 10 mm rope and the green one out of 14 mm rope.