Features: Magnetic head: When screwing in and unscrewing most screws, it is easy to fix and fix the screws. High-strength steel: made of heavy-duty tool steel to prevent wear. Comfort: Large ergonomic handle, easy to carry. Variety of colors: black, blue and red are available in three colors. Each type has four sizes of 0.11 inch, 0.09 inch, 0.07 inch and 0.05 inch to suit different applications. Package Includes: 4Pcs/Set x Hex Screwdriver Specifications: Material: Steel Color :Black/ Blue/ Red Total Length: 195mm/7.7in Handle Length: 90mm/3.5in Handle Diameter: 18mm/0.7in Bit Specifications: H1.5mm/2.0mm/2.5mm/3.0mm note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.