PowerBlock exp stage 2 expansion kit expands the PowerBlock exp stage 1 set from 50 to 70 lbs

PowerBlock exp stage 2 expansion kit adds 6 weight increments to PowerBlock exp stage 1 set

Added increments; 55, 57.5, 60, 65, 67.5 and 70 lbs

Pair (2) of PowerBlock exp stage 2 expansion kits ship in 1 box