Fully adjustable sawmill rail guide system for use with portable chainsaw mills. First screw one bracket to each end of log, then attach 2X4 lumber of any length as rails. Lastly check level and your ready to make a perfectly flat first cut. Create all kinds of live edge lumber, rough cut dimensional lumber or simply be creative. The versatility of this system easily adapts to any job or work environment. Brackets, User manual and wood screws included. Requires 2X4 lumber as rails.