The Beiter Hunter-Nock not like all other nocks asymmetric, but it is SYMMETRIC.The Beiter Hunter-Nock has been designed mainly for Compound archers, using a D-Loop on their string, being the only real symmteric way of shooting in archery. Some features of Beiter Hunter-Nocks, that differs them from nocks of other manufacturers: - The Beiter Hunter-Nock was designed for Compound Archers with D-Loop. Hunter-Nocks are "symmetric" because only with this shooting style, release and nock are in one line, that means: this is the only symmteric way to shoot in archery! - Each Nock size has only one single mould. This offers highest precision and lowest tolerances. Every single Nock of one size comes out of the same mould. - The Hunter-Nock does not pinch on the nocking point, it rests there with a spring effect. The working life is therefore much higher and - very important - the Beiter Hunter-Nock guarantees constant release from the bowstring, shot after shot.