Aukfa's 90lb adjustable dumbbell set offers professional-grade weight progression from 5.5 to 90 pounds using 16 precision plates, ideal for progressive overload and HIIT training. Built with commercial-grade sand-filled plates and a secure locking system, it features ergonomic grips and converts between dumbbell, barbell, and kettlebell configurations. This space-saving solution includes push-up stands and organized storage, making it perfect for comprehensive home workouts in limited spaces.