Prevent slipping & improve air flow around a computer case with non-slip rubber feet A self adhesive backing allows for quick & effective mounting to almost any surface Made from a rubber compound that provides great traction on almost any solid surface top Backed by a Star Tech.com 2-year warranty This pack of 4 rubber feet (1-1/4in diam.) feature is great to have on hand for new system builds & upgrades, providing the necessary traction to cases & devices that require stationary placement. WhatÂ’s in the box Rubber Feet for PC Case