|Versatile unit turns any standard punching bag into a Wing Chun dummy! Adjustable straps make the Attach-Mate compatible with any free standing or hanging bag (will not work with the Century BOB). Features 'simulated' spring action arms (no actual springs in the arms), correct pre-set angles for Wing Chun and compatible arts training. Durable, time tested design will withstand tough workouts. The Attach-Mate makes wooden dummy training possible with your existing bag at a fraction of the cost of a traditional wooden dummy. Assembles and installs in minutes. Manufacturer warranted for 1 full year against defects in workmanship and materials.