Mnpctech's NCASE M1 Black and Silver "Grooved" Desktop Custom PC Case feet are CNC Machined from 6061 Aluminum. They measure 1" diameter x 5/8" height for NCASE M1 ITX case. They will raise your NCASE M1 case height by 5/8" to help improve cold air intake beneath your PC. Each M1 replacement case foot has a 3/4" thick hard rubber insert to protect your desktop or workstation for your NCASE M1, Version 1, 2, 3, 4, 5. Each of the NCASE M1 case foot includes black mounting screw. Mnpctech NCASE M1 case feet have optional black anodized finish, so it's similar finish to Lian Li's Black Aluminum Cases.