The A/C/E insert nock is designed to be used with A/C/C Uni Bushing or fit directly into the A/C/E shaft. The insert nock is precision molded with the throat of the nock located close to the end of the arrow shaft to guarantee the most accurate alignment of the shaft to the string groove. The "G" series nock has a longer nock body to allow fingers to clear Uni Bushings on a large diameter shaft. Packed in dozens.