There are five shock collars available: the standard collar (black), the High Energy collar (red), the 3-blade collar (also black, but specifically for 3-blade heads), the standard Hypodermic Trypan collar (gray), and the crossbow Hypodermic Trypan collar (red).
The Hypodermic Trypan collars are specific to the Trypan broadheads and can only be used on those heads.
All 3-blade Rage broadheads should use the 3-blade collar.
Compound bows and crossbows shooting less than 340 FPS should use the standard black collars.
Crossbows shooting upwards of 340 FPS should use the red High Energy collars.