The Arizona Z-Nock fits onto taper fit arrow shafts. The grooves have been designed so that they almost "click" onto the string. When you release the string this positive string fit results in a smooth release from the bowstring.

The Z-Nock’s have a large area so it is easier to hold the arrow by the nock. According to AAE they have designed the nock so that the angled throat keeps the nock on the bowstring at any string angle, and the thin base blends perfectly to the arrow shaft. Available sizes: 1/4”, 9/32”, 5/16”, and 11/32”.