The “John Boos M.A.S.S.” equipment is like no other strength line. Developed by John Boos, in association with King Strength Mfg, it incorporates John’s decades of learning the benefits of strength training for all ages. While important for everyone, strength training is even more crucial...
King Strength Mfg is proud to offer our specialty line of professional quality strength equipment. Each of our pieces feature the utmost of attention to detail as it relates to function, diversity for the trainer, and durability in heavy-duty settings. We will be adding additional...
King Strength Mfg is proud to offer our specialty line of professional quality strength equipment. Each of our pieces feature the utmost of attention to detail as it relates to function, diversity for the trainer, and durability in heavy-duty...