Equipped with high-quality tough/hard bits and bit holder with quick-change chuck and permanent magnet (Rapidaptor technology). For use with hand and power tools (conventional cordless screwdriver)Contents:1 bit holder (50 mm)1 bit for slotted head screws 5.5 x 1.0 mm*2 bits for Phillips (PH) screws Size 1*3 bits for Phillips (PH) screws Size 2*1 bit fo