Arlington’s new drive rings offer the fast, easy way to run electrical, SE, SEU and communications wire or cable on interior wood framing members or exterior walls. Made of corrosion-resistant galvanized steel, this series of drive rings provides sturdy support for wire and cable. Available in four sizes (measured inside the loop), they support a range of cable bundle sizes. The larger the drive ring, the more wire it holds. Installation is quick and easy. Use a hammer to attach the drive ring to the surface. Made of corrosion-resistant galvanized steel. Provides sturdy support for wire and cable. Size 1/2".