Grim reaper practice head for for all std 100gr rt & rc FEATURES-Practice head is identical configuration of Grim Reaper mechanical heads-Same fly and impact as broadheads-Will hold up long term to use on broadhead type targets-100 grain-For 1 3/8" & 1 1/2" cut Other Features: Practice head is the identical configuration as all 100gr razortip & razorcut mechanical heads,found to fly & impact the same as actual heads