High Quality Material: Constructed from high quality aluminum and galvanized steel, these new brackets are easier to adjust and durable for long-lasting using. Efficient Working Tool: This tool has a parallel bar that can have its distance adjusted from the chainsaw bar to provide different thickness slabs. Mill slabs between 1/2" to 13" thick. Adjustable Chainsaw Mill: The chain saw rail guide is suitable for chainsaws with a bar length between 18" and 48", planking milling height & width are adjustable. Easy To Assemble: All necessary assembly and installation hardware are including for easy installation. Wide Application: Using together with chainsaw to convert rough logs into beautiful slabs. Ideal for homeowners, woodworkers, & carpenters, you can mill your own lumber at home or in the woods ***7