Features: Highly precise tips in various specifications for different uses The handle is designed based on Human Mechanics, which makes operation more efficient and convenient All tips are made of chrome/vanadium steel (6150#), and specifically heat-treated (Hardness HRC52°C -56°C) 9pcs in 1 precision screw driver set includes 8 insert bits, 1pc Rubber Handle, 1pc extension rod Brand new tool kit would be the perfect accessories for changing out your objects Specification: Type: Precision Screwdriver Screw Head Type: Color: Black+Green