MulWark Hex Head Allen Wrench Drill Bit Set 20PC (10pc Metric & 10pc SAE) & 5 Spring-Loaded Automatic Steel Center Hole Punch

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 matt rust-resistant finish with labeled size marks & magnetic tips. Two portable rubble strips store in a durable plastic case: 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,EASY AND HANDY: Mark a dimpled starting point in metal, wood, glass, leather or plastic surface, prevent drill bits and screws from wandering around with one-handed hammerless operation,PREMIUM GRADE: This is made of hardened Cr-V steel that holds up to high impact and provides wear resistance, rust proof and strength to prolong the tool’s life