RPM Turbo Bowfishing Arrow with AMS Slide - With Universal Ferrule and true 5/16 inch skinny nock. The result is a collection of bowfishing equipment like no other. Marix Shaft Carbon Sleeve W/Fiberglass Solid Core 32 -Inch Shaft1100 Grain Weight True White 5/16--Inch Skinny Nock NRG Shaft Six Carbon Strands For Added Spine32 -Inch Shaft1200 Grain WeightHi-Viz Green 5/ -Inch Skinny Nock