JM-999 5PCS Precision Screwdriver Set Features: 45#Sreel material,applying high frequency quenching treatment to make it durable. High-Precision processing technology makes perfect bits more durable and uneasy to be worn and rubbed with rust-proof treatment. Anti-corrosion handle.Well protected while working with some chemical environments. Slotted:2.0 Phillips:2.0 Torx:T5,T6 Pentable(star):0.8