Heavy Duty & Low Profile: design with screw fixing depressions, securely fixed without sliding or peeling, while hiding under the gutter lip. Easy to install: Installation using a 1/4 inch (approximately 1.4 cm) nut drive and cordless drill bit for faster and smoother connection to of the rafter without hooking. Enhanced Drain Support: Fast screw drain hooks add tension to new and existing 5-inch (approximately 13.2 cm) aluminum drains to prevent sagging and lows. Suitable for snow and water : By repairing lows and sagging parts, strengthening drains to resist heavy snow and prevent water from overflowing. Multi-pack: Contains multiple hooks to solve multiple sagging areas on the drainage system., Weight: 0.88515598193 pounds, Manufacturer: Aisuoka