Standard specifications for H1.5 / H2.0 / H2.5 / H3.0, suitable for repairing most model toys. Non-slip design ergonomic handle for easy and secure use. High-speed steel screwdriver bits have high hardness and are more durable than ordinary bits. Precise design, convenient to change blades. Widely used for repairing or assembling radio-controlled cars, model airplanes, etc. Features: 1. Standard specifications for H1.5 / H2.0 / H2.5 / H3.0, suitable for repairing most model toys. 2. Non-slip design ergonomic handle for easy and secure use. 3. High-speed steel screwdriver bits have high hardness and are more durable than ordinary bits. 4. Precise design, convenient to change blades. 5. Widely used for repairing or assembling radio-controlled cars, model airplanes, etc. Specification: Material: High-speed steel Color: As pictures show Hex Screwdriver Blade Specification: 1.5mm (H1.5), 2.0mm (H2.0), 2.5mm (H2.5), 3.0mm (H3.0) Total Length: Approx. 155mm/6.1in Handle Length: Approx. 100mm/3.9in Weight: Approx. 53g Package List: 1 * 4-in-1 Screwdriver