Features: Manufactured from alloy steel material, with heat treated for strength and durability. 46pcs set combinations, different sizes can meet your daily needs for various kinds of repairing work. Black and red double color handle design, ergonomics, anti-skid and shock absorption. Reserved with a hole on the tail of handle for easy storage. Equipped with one carrying box, easy storage and easy to take out with you. Wide applications, perfect for equipment installation, mechanical maintenance use. Suitable for factories, production lines, repairing shop, auto repairing factory, car modification etc..