The Jim Fletcher Tru-Peep Super Hunter 3/16" peep sight is part of the family that ranks as the world's first peep sight. The Fletcher Tru-Peep is all-aluminum with a legendary design that allows for a perfectly round, shaded hole at full draw. The Tru-Peep eliminates the need for protruding hoods and is kept in place by reliable safety-tie groove that enables the peep sight to be secured to the bow string. All-aluminum peep sight measures 1/4" in thickness. Ingenious design eliminates the need for protruding hood. Creates a perfectly round, shaded hole at full draw. Safety-tie groove keeps peep in place. No tools are needed for installation.