The Viper Pro Target BB Catcher is a free standing target holder with a mesh containment net to retain your bbs when target shooting or zeroing in your scope.The back of the target features a mesh netting to capture your BBs. Excellent lightweight construction due to its polymer frame that will withstand BB impact from distance. The paper targets can be replaced in seconds, you get 11 with the catcher itself and we also sell spares separately. A great gift or small purchase alongside your new Airsoft gun for some practice before your next game. Designed to take paper targets, it measures 17.5cm x 17.5cm or 6.89" x 6.89". It is the ideal partner for the Viper Pro Paper Targets. This unit also folds for easy storage.