AGPTEK 2 Way Telecom Screwdriver Set, 8-piece 45# steel Adjustable Professional Home Multi-purpose Double Head Precision Screwdriver Set Material: 45# steel and it will be not corroded easily Full lenth: 180mm/120mm/135mm Including 3.0&PH0 H6.3/5.0&PH1 H6.3/ 6.0&PH2 H6.3/ T25&T30 H6.3/T15&T20 H6.3/ Y1&Y2 H6.3/3.5&PH1 H4/Awl H6.5 screwdrivers and screwdriver handle for H6.3/H4.0 Shafts length are adjustable according to your need Very comfortable and convenient to use and it will greatly save a lot of time; it is very smart to prepare a screwdriver set for future use in this big sale day!