About this item How It Works: Grommet bushings allow for clean installation, protecting wires, cables, and cords from damage as they pass through walls and other openings. Works With: Low-voltage cables, wires, cords, tubing, and other hardware and electrical equipment. Indoor and Outdoor Use: These grommets withstand weather and UV so that they securely cover exterior openings and shield cables from the elements. Size Specifications: This size fits 1 regular cable or cord and has 2 additional side grooves for micro-wires, including grounding wires. Please note: This design makes an irregular shapesee Installation Guide in images for instructions on how to snugly install into a wall. Made to Last: These pass-through, wall plate-style bushings are made from high-impact ABS plastic that holds up to everyday forces and stays in place. Dimensions: 1.5 x 1.5 x 2 inches.