WELL-EQUIPPED BITS SIZE - 20 piece hex driver/ allen drill precise bits in the following size: 10 PC SAE of 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 10 PC Metric of 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm

INDUSTRIAL GRADE QUALITY - The hex drill bits are made from S2 steel material in a shiny rust-resistant finish with labeled size marks & magnetic tips. The package includes two portable rubble strips: one packs bits in SAE, another packs bits in Metric

EXPERIMENT TESTS - The bits have experienced torsion and hardness test. The results of tests show that the maximum torsion force of bits are 180-200N and the hardness of bits are 57-59HRC. The high torsion and proper hardness avoid the bits break and wear

USAGE VERSATILITY - 1/4 inch quick release hex shank driver bits fit for electric screwdriver, hand screwdriver, electric drills & air drills. Ideal for working on vehicles, bicycles & furniture. Assembling/repairing your furniture in an easy way

LIFETIME WARRANTY All MulWark - tools are warranted to be free of defects in materials and workmanship for as long as you own the product, you may return this product free of charge with original purchase receipt or choose to get a replacement