The Driveback machine with its Tackle Dummy has a trolley mechanism fitted with wheel bearings that rides easily over the bar eliminating drag and pinching. This attachment that we call ELASTIC SHOCK, or elastic shocks, are elastic cords that give the football dummy resistance when driving the dummy back, giving the dummy resistance and "fight back." Available in two tensile strengths: 100 lbs. for pro and college, and 50 lbs. for high school. Sold as pairs.
