Reach Octane II Adjustable Iron Smart Dumbbells (2.5 Kg To 20 Kg) For Strength Training | Home Gym Equipment | Easy Multi-Weight Adjustment With Twist Lock | Durable Anti Skid Handle | For Men & Women OCTANE – REACH adjustable dumbbell with 20 kg dumbbell set sports a weight ranges from 2.5 – 20 kgKg. This replaces 5 pairs of dumbbells or 50kg of free weights in the space of just 1 pair. Its smaller size is a patented design engineered for maximum balance and control. TWIST LOCK TECHNOLOGY - Quick change weight adjustments with TwistLock technology. Allows you to change weight setting with 1 hand. Set dumbbell in cradle, twist the handle and weight changes quickly and safely. CONVENIENT STORAGE - All-in-One design barely needs storage room in your home gym; convenient access by placing on the gratis plastic-tray TEXTURED HANDLE GRIP - Contoured, textured and soft grip handle design provides comfortable and secure grip control DURABLE CASTE - Durable dumbbells are well cast for preventing from rust and corrosion for lifetime with non-slip grip