TurboTech 30 mm Precision Slotted and Phillips Screwdriver Tool Set, 8 Pieces Sizes : T3, T4, T5, T6, -1.5, +1.5, +1.2, 0.8 Finger tip control caps Technicians Precision Sets With Black Oxide Finished Blades. Hardened tool steel Molded on ergonomic handle Guaranteed professional quality