8" Round KNOCKDOWN™ SeriesThe THROOM 8" KNOCKDOWN Reactive Target and the Pivot Base it mounts on are each sold separately. When mounted on the Pivot Base and hit, this 8" KNOCKDOWN THROOM Target reacts and falls over backwards. It stays down until you reset it manually or by pulling on a string. Bullets pass through the 8" KNOCKDOWN target and the Pivot Base because they are both made of SHOOT THROO, our tough, flexible, self healing polymer. To mount a KNOCKDOWN target on