Rocky Mountain Snyper XP3 broadheads, 3 hinged blades, 5/8" closed, 1 1/8" open and with 100 gr in a pack of three. This mechanical broadheads has excellent flight characteristics, especially well suited for crossbows with which you can also use the high arrow energy due to the special bone tip. The 3 blades open only after penetration, weight 100 grain (approx. 6.48g).