Monitor riser block kit provides a more comfortable fit for your DAC Stax Monitors Risers MP-107, MP-211, MP-213 and MP-212 (all sold separately). The kit includes three blocks - one for each side - that attach easily to the three blocks that come with the monitor riser. Add as many levels of blocks as you need to increase the height of your monitor for an ergonomic level to help prevent neck strain. Three-piece base sits flat on surfaces to prevent wobbling.