20-Piece Magnetic Nut Driver Set, Metric & SAE 1/4″ Hex Shank, Drill Socket Set,
Hex Shank 1/4″ 1/4″ 1/4″ 1/4″. CR-V steel material; Hex Shank; Strong Magnetism; Top Quality; Quick Change. STRONG MAGNET – Each nut driver in this set features a high-quality magnet that securely locks and holds the drill bit.