The screwdriver bits are selected from steel for enhances surfaces hardness resistance The handle is constructed from lightweight aluminum unmatch durability and bits for secure grip on tiny screws Suitable for any maintenance enthusiasts look for Precisions in package The screwdriver set includes a total of 24 different size of screwdriver bits and aluminum handle, making it suitable for a wide home maintenance scenario This screwdriver head set features ergonomic hexagonal, providing ease of force and slippage during rotation, Manufacturer: LiRRvb