GoFit Resistance Power Tubes/Bands - Resistance Training Workout GYM QUALITY: Made of heavy duty, premium components PROFESSIONAL GRADE: Durable latex rubber tubing is strength-tested to determine reliable weight-resistance levels. Length: 54" OPTIMAL PERFORMANCE: Nylon webbing, stitching and connecting rings have all been beefed-up for optimal performance ALL-IN-ONE: Innovative tube connection is designed for superior dependability. All-in-all, an ultra-versitile training tool AVAILABLE WEIGHT RESISTANCE: 20, 30, 40, 50, 60, 70, 80, 100 LBS