The Rage Black Series 2 Blade Cut On Contact Tip is a combination of Rage's most popular shock collar models. The aluminum ferrule is machined to scrupulous specifications anodized black and assembled with their sharper-than-ever 420 SS blades. The 2a ^2 cut rear deploy main blades stay locked in place in your quiver and inflight thanks to our proven Shock Collar Blade Lock technology. The Black Series comes with 6 shock collars 3 Black Collars for use with vertical bows and 3 Red collars for use with crossbows. Each collar has 6 petals and can be used up to 3 times (once per petal). Once the .035a ^2 blades encounter hair and hide they push rearward and deploy into a massive 2a ^2+ cutting diameter leaving a massive entry wound and providing unparalleled blood trails.