Product Description 
★ Professinal design, beauty appearance and portable screwdriver set is easy to use
★ Multipoint and adjustable extension bar is easy to disassemble and can be changed the length according to different requirements
★ High quality and precision screw heads of all types are suitable for work in different   areas
★ The handle of ergonomic design is easy to operate.
★ Precision screw heads under high temperature processing are made of high quality chrome-  vanadium steel (6150#),whose HRC is from 52-56 degree.
Specification 
★Item:BEST-21068  Precision Screwdriver Set
★Material:Cr-V steel(6150#)+ ABS handle coated
★Heat treatment:Screwdriver head is black finished
★Magnetic:YES
★Strength:HRC52-56°
Packing include:

★ Torx: T4,T5,T7,T8,T10,T15,T20
★ Hex Socket: 1.0,1.5,2.0,2.5,3.0,3.5,4
★ TRI-WING: 1.5,2.0
★ TriangleΔ:2.0,2.3
★ Five-pointed star :1.5,2.0
★ Cylindrical Θ:1.0
★ Pozi:PZ0, PZ1
★ M:2.5,3.0,3.5,4.0,4.5,5.0,5.5
★ H:2.3
★ Slotted: 1.3,1.5,2.0,2.5,3.0,4.0
★ Phillips: PH00,PH0,PH1,PH2
★ Accessories: 1* Universal pick stem, 1* Extension bar 
★ Package:Plastic box
★ Package size:157*166mm
★ G.W.:0.3kg/set