FIN FINDER UNDERTOW BOWFISHING ARROW W/THE KRAKEN POINT Premium 5/16� carbon shaft with solid fiberglass core provides ultimate penetration and performance. Each Undertow shaft must pass a QC straightness inspection prior to assembly, ensuring unsurpassed accuracy. Measuring 32� length and equipped with tunable nock system and the Cajun ACS Slide, 5/16� stainless steel Kraken point included. Hydro-lok O-rings on all points.