The Silent Knight Vane is built for bowhunters with a design that is fast, quiet, smooth and tapered for optimal flight without alerting game. These 3” vanes are 30% thinner than thermoformed vanes and have a lower profile that produces less drag and wind drift. 3” vanes have more surface area to produce more stability in flight, allowing you to confidently shoot fixed-blade broadheads. Testing has shown an increase in velocity by 2 fps when compared the same arrows fletched with popular 2” thermoformed vanes. These made in the USA vanes measure .485” high and weigh 6.8 grains.