Complete installation set: Each package contains 40 components, including 20 robust silver clips and 20 practical spacers to meet your installation needs. Aluminum construction: Made from a resilient aluminum alloy, these clamps resist rust and breakage for reliable long term use. Reliable holding power: Designed to securely hold heating cables in place, preventing slipping that can compromise the effectiveness of a deicing system. Easy installation: Tool setup with no nails or screws required, saving time and effort during installation. Applications: Roof edge deicing: Secure cables along the eaves to maintain placement at critical points and reduce ice dam risk. Gutters and downspouts: Hold cables in position near gutters to ensure reliable heat delivery. Driveways and walkways: Attach along surfaces to maintain proper cable alignment for effective deicing coverage.