... ,two pieces of 3kg and two pieces of 4kg.2 Specification : 12kg,14kg,15kg,16kg...... 32kg3. Material: steel4. Color ; ... of different weight plate into the kettlebell, then in the upper part and the kettlebell fixed. Easy operation , the use of safety. ( ... samples are available for you to check the quality, and compare the price!Also OEM is welcome, including the functions, colors, shapes, packing ...