Easy Installation: With pre inserted screw, it is easy to install on almost all 5 inch non plastic K shaped gutter channels. It is equipped with pre inserted 3 inch long, 1/4 inch hex head self tapping screw. You can use a 1/4 inch nut driver and a cordless drill to install What You Get: The package includes 30pcs gutter hangers and a 1/4 inch nut driver. Suitable for homes in rainy areas, providing a neater aesthetic for the exterior of the home For K Type Aluminum Gutter: Our hidden gutter bracket clip is used to handle heavy rainfall and provide maximum security for your gutters. It has two triple ribs to enhance strength, suitable for any K type aluminum gutters Premium Aluminum Alloy: Made of aluminum alloy, this gutter hanger is lightweight and rustproof. The curved shape provides greater strength and reinforcement to the hanger body, helping to maintain the original shape of the gutter and hold it in place Gutter Reinforcement: Positive thread engagement with less slippage is ideal for straight or sloped boards and reinforcement of existing gutters. This gutter hanger should be placed at least every three feet for proper support, Manufacturer: Deuson