The Caldwell® Duramax Self Healing Targets are made of ballistic polymer for maximum durability. The targets are self-healing and can be shot thousands of times. The Duramax Self Healing targets are rated for pistols or rifles from .22lr all the way up to 50 BMG. These reactive targets bring a whole new level of fun to the range. Watch them bounce, roll, spin, and flip when hit. FEATURES MADE OF BALLISTIC POLYMER FOR MAXIMUM DURABILITY TARGETS ARE SELF-HEALING SO YOU CAN SHOOT THEM THOUSANDS OF TIMES RATED FOR PISTOLS OR RIFLES FROM .22LR ALL THE WAY UP TO 50 BMG REACTIVE TARGETS; BOUNCES, ROLLS, SPINS OR FLIPS WHEN HIT