ADJUSTABLE DUMBBELLS PROSPECIFICATIONS & FEATURES:GENTLY TURN THE HANDLE FOR ONE SECOND TO ADJUST;THERE IS NO NEED TO REPLACE THE BELL PLATE;IT IS NOT NECESSARY TO TOUCH THE HANDLE WITH BOTH HANDS, BUT TO GENTLY ROTATE THE HANDLE WITH ONE HAND;10-CHANNEL SAFETY LOCKING GROOVE, STAINLESS STEEL CHASSIS.COLOR AVAILABLE:BLACK, MILITARY GREEN, RED, OR ANY OTHER CUSTOMIZED COLORS.WEIGHTS AVAILABLE:20KG / 32KG / 36KG, 2KG OR 4KG INCREMENTS.PACKING DIMENSIONS:20KG, 470X270X300MM;32KG, 570X270X300MM;36KG, 570X270X300MM.