Lenovo 7M27A05700 Mech Toolless Slide Rail, Cable management arm, Length 2.6 ft, Designed For Lenovo ThinkAgile VX3520-G Appliance 7Y94 ¦ SR550 ¦ SR650 ¦ SR850. Optimize your IT resources and make them more cost-effective to operate with the Lenovo Rack Rail Kit.