The Carbon Force Black Mamba arrows are the perfect big game arrow. The Black Mamba uses a stainless steel insert and a stainless steel insert collar for added FOC weight and durability. Our new QuietCoat technology allows Carbon Force arrows to perform better than ever, reducing noise as the arrow slides over the rest, and allowing for better penetration and removal. With 9.2 Grains per inch and straightness of +-.003 the Black Mamba arrow is the ideal bone crusher. Includes a 10.5 grains per inch weight tube for a total weight of 19.7 grains per inch. Shafts come full length with inserts and collars loose, nocks installed. Fletched arrows come full length inserts and collars loose, nocks installed and fletched with 4 Duravnes.400 size only.