The Pro Power 151-201 GROMMET KIT is an assortment of electrical components that is used to install electrical wiring to various materials, such as sheet metal, sheetrock, and drywall. The kit contains grommets, plastic plates, self tapping screws, and insulator caps. The grommets are designed to protect the insulation of electrical wires, while the plates and screws provide a secure connection. The insulator caps are designed to keep debris, such as dust and water droplets, out of electrical contact. The Pro Power 151-201 GROMMET KIT is perfect for installing and protecting wires in any electrical project.