Felo Smart is a compact interchangeable blade screwdriver set with the Unique smart 2-component handle combining screwdriver and T- handle function in one. New improved construction for one-hand operation: It's not longer necessary to replug the blade in order to switch between screwdriver and T- handle use. All pieces in 1/4" norm measure = suitable for cordless screwdrivers. The 2 component handle features a pleasant soft grip material for highest torque. Ergonomically refined design. The Smart set replaces 48 single tools. Blades made from high-quality bit-steels chrome-vanadium-molybdenum, exceeding the DIN/ISO requirements by up to 100%. anti-roll handle design. Black tip for precision fit. The Set Includes: Blades 1/4"x160mm: PH 1 - 4,0 / PH 2 - PH 3 / PZ 1 - 5,0 / PZ 2 - 6,0 / SQ 0 - SQ1 / SQ 2 - SQ 3 / SL3 - 4 mm/ SL5 - 6mm/ TX 06 - TX 07 / TX 8 - TX 9 / TX 10 - TX 15 /TX 20 - TX 25 1x Smart Handle 105 x 39 mm (2 in 1) StrongBox 230mm x 130mm x 56mm