Bohning's F Nock fits micro shafts with an ID of .166" (commonly known as 4mm or G Nock) shafts and G UNI Bushing systems. The F Nock features a double-lock throat of .120" (3.05mm). Each F Nock weighs an average of 6.5 grains (421.2 mg).
HOT WATER REVERSIBLE - EXCELLENT FOR ALIGNING AND TUNING BROADHEADS
