Newbold's HangTuff Targets hang down from 2x3s, 2x4s and 1x6s. They attach easily with two wood screws, which are included. When hit, these targets flip around in all directions. For maximum movement, shoot .22-Cal. at the smaller 2, 3, 4 & 6-inch HangTuffs. 8 & 10-inch HangTuffs move more when hit with larger .38s, 40s & .45s. The flexible strap is made of Throom™, the same Self-Healing material as the target. Bullets pass through the polymer target and the strap.