Product DescriptionThese 1/2"" nail on drive rings are used to support communications cables and other low voltage wires. Garvin IndustriesÂ’ quick nail on drive rings with looped harness saves time and provides a very economical support in wet or dry locations. They may also be used on wood surfaces or with beam clamps that accept drive pins. Application:These nail-on drive rings are used to support communications cables and other low voltage wires. Advantages: Garvin IndustriesÂ’ quick, nail-on drive rings with looped harness save time and provide a very economical support in wet or dry locations. They may also be used on wood surfaces or with beam clamps that accept drive pins. Field Names: Drive ring, drive pins, dive hooks.