Ab Crunch HarnessAb Crunch Cable Machine Attachment The Valor Fitness Cable Crunch Attachment is a must have accessory for anyone serious about building a strong, defined core. Designed for use with cable machines, functional trainers and workout machines, this ab crunch machine attachment allows you to perform kneeling cable crunches, cable Russian twists, standing crunches and cable sit ups, targeting the abdominal muscles for maximum strength and muscle definition.
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