The WORKPRO set (WP200516) is a precision tool for electronics, mechanics and home repair. It contains 18 pieces: - ratcheting screwdriver - comfortable turning in both directions without lifting off the screw, with a lock for normal (manual) turning - 120 mm magnetic extension for working in tight spaces - 16 Cr-V bits: SL 2, 2.5 and 3 mm; 2x PH00, 2x PH0, PH1, PH2; Torx T5, T6, T7, T8, T9, T10, T15 The bits are made of heat-treated chrome-vanadium steel (Cr-V) - harder and corrosion resistant. The soft rubber handle is anti-slip for comfortable, long working sessions.