Medical devices and apparatus more particularly described as a set containing devices and apparatus used by surgeons as instruments designed specifically for performing surgery on the lumbar section of the human spine. Each set includes individual devices, apparatus, and instruments, namely, namely, retractor frame, lumbar blade with teeth, wide muscle blade, multi-toothed hooks, blade offset, hooks, angled manipulation hooks, foraminal probe, ball tip probe, nerve root extractor, color-coded depth gauge, and instrument tray. All parts are made of aluminum and the case is designed with holes in order to allow for proper sterilization of tray and included parts