The phrase "hammer strength" refers to a type of exercise equipment designed to simulate using a hammer while working out. It helps develop stronger muscles by allowing you to push or pull with both hands together. Full definition
Whether you are working out with t - bar rows, dumbbell rows, seated cable rows, barbell rows, Hammer Strength machine rows, inverted rows, chest supported rows or whatever else you do... it's all the same. (gymjunkies.com)
Odd Week Warm Up: I start off with deadlift, the wide grip pull downs, and finish with hammer strength rows. (bodybuildingforyou.com)
For this finisher you'll need to set the machine fly, incline hammer strength machine, incline smith machine and cable crossover machine to a moderate weight, then perform one set of 12 reps at each machine, performing pushups to failure between each set. (fitnessandpower.com)