The Metabo 1010730151 Machine Carrier Rail is a genuine replacement mounting rail for selected Metabo KSU mitre saw work stands, including the KSU 400 and KSU 250 Mobile. The rail forms part of the saw mounting system, allowing the machine to be fixed securely to the stand and removed when required. Metabo parts data lists 1010730151 as the carrier for both the 0910066110 KSU 400 workstand and the 31318000 KSU 250 Mobile stand, making the exact stand model important when checking compatibility.