The Rage Black Series 2 Blade Cut on Contact is a combination of our most popular shock collar models. The aircraft-grade aluminum ferrule is machined to scrupulous specifications anodized black and assembled with our sharper-than-ever 420 SS blades.The .039a ^2 cut on cut on contact tip features our oval shape to improve durability increase cutting surface and increase blood loss. 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.