Key item features Comprehensive Assortment: This 100-piece set includes a variety of drill bits, screwdrivers, and nut drivers, suitable for drilling and fastening on metal, wood, masonry, and plastic. Premium Durability: Drill bits are crafted from high-quality HSS or carbon steel with a precise coating, while screwdriver bits are made from upgraded CR-V material for enhanced toughness and durability. Organized Portability: All components are neatly arranged in a portable case with a sturdy PE shell, featuring secure slots and clear labels for easy transportation, selection, and storage. Versatile Accessories: The kit includes a magnetic bit holder, 4 hole saws, 1 arbor adapter, 1 countersink drill, 1 cup nail punch, and a 2.5mm hex wrench for diverse applications. Efficient Performance: The set is designed for precision drilling and effortless fastening/loosening, with 56 different screwdriver bit specifications to prevent slipping. Extensive Contents: The package contains 14 HSS Titanium-Coated Twist Drill Bits, 9 Masonry Drill Bits, 9 Brad Point Drill Bits, 3 Spade Drill Bits, 52 25mm Screwdriver Bits, and 4 Nut Driver Bits.

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