Thinklearn 20PCS Allen Wrench Drill Bit Set-TL1093

【20PC Hex Bits Set】10PC SAE-5/64”,3/32”, 7/64”, 1/8”, 9/64”, 5/32”, 3/16”, 7/32”, 1/4”, 5/16”,10PC Metric-1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 6mm, 7mm, 8mm 【S2 Tool Steel】Meet international standards: tempered at 350-800 deg F to obtain hardness of Rockwell C 58-62, stands up to abuse. ThinkLearn Allen Socket Set 10 times life expectancy versus standard bits. For impact driver and heavy screw driving 【Strong Magnetic Head】Helps you pick up screws easily / locate them more easily and the magnetism will not decay after many uses. Hospitalized black surface - ensures no rust in high humidity environments 【CNC machined tips】and undergo a special treatment process.This ensures long-lasting durability and precision, even under heavy use. Torsion zone to absorb torque peaks to avoid breakage.For impact driver and heavy screw driving 【4"Length Hex Bit meet more needs】Compare with other size hex bit, 4” long drill bits are more widely used in daily life,more practical and convenient, 4” h