These sawhorses are great for adjusting to all types of projects. With a low height of 30 inches (76 cm) and a high height of 51 inches (129 cm), these sawhorses can help reduce lower back stress when used at a proper working height. The design allows for a height setting every 2 inches (5 cm). If these will be used outside a lot, the feet can be constructed from pressure treated lumber to increase longevity. Those who have scrap wood lying around could even build these for a very low cost. Downloadable files include material/cut lists, detailed drawings, and assembly instructions. These have been updated based on previous reviews to improve printing quality. Recommended tools: miter saw, electric drill, planer/sander