Foam-covered, Power-Assisted Spring Mechanism, JKexer 510 Abdominal Crunch Twist Trainer - JK Fitness

Foam-covered, Power-Assisted Spring Mechanism, JKexer 510 Abdominal Crunch Twist Trainer - JK Fitness

Foam-covered, Power-Assisted Spring Mechanism, JKexer 510 Abdominal Crunch Twist Trainer - JK Fitness

Foam-covered, Power-Assisted Spring Mechanism, JKexer 510 Abdominal Crunch Twist Trainer - JK Fitness

Foam-covered, Power-Assisted Spring Mechanism, JKexer 510 Abdominal Crunch Twist Trainer - JK Fitness

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