High-Torque Precision Impact Bit Set, S2 Steel, Super Strong Magnetic Properties, 10/20 Piece Set, Long and Short Versions 50Mm/25Mm, Compatible with Impact Drills in Various Models Such as Ph/T/Sq/Sl, Red and Black Color Scheme, Suitable for Home DIY (Self-Repair and Crafts)/Mechanical Repairs/Electronic Equipment Installation/Furniture Assembly