a grounding clip is a shelf - grounding device includes a resilient conductive clip that installs onto a fully assembled shelving unit , providing a plurality of electrical connections between the shelf and post to reduce the risks from electrostatic discharge , or esd . the clip can be installed and removed without the use of tools and is held securely in place when attached . since the clip is attached after the shelving unit is assembled , less skill is required by the installer during the installation or reconfiguration process . the clip is reusable and provides electrical connectivity between the shelf and post regardless of whether the shelving unit was assembled with conductive or plastic split sleeves .