The Gearhead Archery arrows are designed for speed. The Gearhead 400 carbon arrow is a 400 spine, 7.3 Grains Per Inch arrow. The Gearhead 400 come three fletched with 2 inch, durable yet flexible vanes. The nock is a two-stage configuration that snaps securely to the string. The Gearhead 400 also comes with inserts and 100 grain field points. Sold per dozen only…..