About This 2-in-1 Versatility: Arm Trainer & Ab Wheel. Enjoy double the fitness benefits with our detachable design! Switch between an arm twister for upper body strength and a smooth-rolling ab wheel for core workouts. No tools needed – simply snap them apart. (2 bonus items: backpack & yoga mat included) 15-Level Adjustable Hydraulic Resistance: Tailor your workout intensity with precision! Our hydraulic system delivers even resistance across 15 distinct levels (22-440 lbs). Feel clear progression with each set – perfect for beginners to advanced users. Full-Body Muscle Strength Training: Target multiple groups in one device! Strengthen shoulders, triceps, chest, and forearms with the arm twister, then switch to sculpt abs, back, and obliques with the ab roller. Efficiently maximize your home gym results. Effortless Adjustments & Ergonomic Design: Customize your grip and force range in seconds! The sliding handle adjusts to 10 positions, accommodating different muscle groups exercise. Soft non-slip grips reduce fatigue while the hydraulic mechanism ensures smooth, controlled motion. Portable & Space-Saving (Ideal for Travel!): Take fitness anywhere! Detaches into compact pieces stored in the included backpack. Truck drivers, office workers, or travelers can stash it under seats or in luggage. Reassemble instantly for hotel room, park, or roadside workouts. Safer & Smarter Than U-Shaped Trainers: Upgrade from rigid U-shape trainers! Our adjustable resistance prevents overexertion injuries, while the ergonomic handles reduce wrist strain. Hydraulic tech offers fluid motion – no jerky springs or pinching hazards. Perfect Gift with Premium Accessories: Impress loved ones with a complete fitness kit! Great for teens (build strength), seniors (gentle rehab), or busy partners. Includes: Arm Trainer + Ab Wheel + Backpack + Yoga Mat + Tools. Ready to gift! Overview Brand : FLYBIRD Color : Black-Red Material : Metal Product Dimensions : 9.06"D x 2.76"W x 13.79"H Maximum Weight Recommendation : 440 Pounds