SURETORQ 43-Piece Precision Screwdriver Bit Set The bits are made of S2 alloy tool steel, offering the perfect balance of hardness and toughness. With special heat treatment, they deliver superior performance. This set includes: 21 standard bits (25mm length) 20 precision bits (28mm length) Two ergonomic handles (large & small) for different needs Perfect for household repairs, electronics, watches, and eyewear maintenance—this all-in-one kit has you covered. Packaged in a stylish case, it also makes an excellent gift for DIY lovers. SURETORQ—No screw too tight, no nut too stubborn!