The Power Block Sport EXP Stage 2 Add On Kit expands the Sport EXP Stage 1 set to 32kg (70.5lbs) per hand & together with the Stage 1 set, it replaces 22 pairs of dumbbells or 340.2kg (750lbs) of free weights. This solid & easy to use kit has a compact, space-efficient design & the weight is printed on the rails for easy selections. The add on kit adds 6 additional increments to Sport EXP Stage 1 set & enables you to take your strength training to the next level. Plus, for enhanced durability it is coated with an anti-friction, non-textured paint.