Mnpctech's NCASE M1 Silver "Grooved" Desktop Custom PC Case feet are CNC Machined from 6061 Aluminum. They measure 1" diameter x 5/8" height for all versions of the NCASE M1 ITX case. They will raise your NCASE M1 case by 5/8" to help improve airflow beneath your PC. Each case foot has a 3/4" thick hard rubber insert to protect your desktop or workstation. Each case foot includes black M3, phillips head mounting screw. Each NCASE M1 case foot made by Mnpctech has black anodized aluminum finish, which mirrors all Lian Li black brushed aluminum PC cases.