This universal expanding hole tool is designed for RC cars and helicopters, featuring a durable construction of high-strength alloy steel and aluminum alloy. The tool can open holes with diameters ranging from 0 to 14mm, making it versatile for various applications. Its blue color adds a professional touch, while the aluminum alloy safety cap and CNC handle with built-in storage ensure convenience and safety. Ideal for hobbyists and professionals alike, this tool meets the needs of precision and durability. Features -Color:Blue -Material:Aluminum Alloy & Steel -Size:13.20X1.70X1.70 cm/5.19X0.67X0.67in -Color: The tool is primarily blue, offering a sleek and professional appearance.Material: Made from durable hard steel and aluminum alloy for use -Versatility: Suitable for use with RC cars and helicopters, providing a wide range of applications -Durability: High-strength alloy steel reduces wear and distortion, ensuring reliable performance -Safety: Includes an aluminum alloy safety CNC handle with a built-in storage container for accessories and screws Package list: Drilling and reaming tools