100mm Length Metric Hex Head Wrench Drill Bit Magnetic Hex Screwdriver Set 8Pcs 1/4" Hex Shank Head Screwdriver Bits Set

 FeaturesHeat treated, durability, has high hardness, not easy to wear.Please make sure you select the correct drill and control the correct drill speed. This greatly extends the life of the hex bit.Hardness can reach HRC60 degree. Hex key set fit for electric drills with speed regulating device, electric screwdrivers, hand screwdrivers.Please do not use drill bits on pneumatic tools, air dills, and the electric drill without speed regulation. A long lifetime of the drill bit is reached due to its construction and superior technology.High quality, long lasting and . The Hex drill bit set is clearly marked that you can find what size you need quickly. for Easy to take and use.The hex screwdriver set is a little bit magnetic, which helps to keep nuts and bolts stuck to them. Can improve your work efficiency. Description:Item Name: Screwdriver BitsMaterial:S2 SteelLength:50mm/100mmSize:1.5/2/2.5/3/4/5/6/8mm Package includes50mm/100mm 8PCS Screwdriver Bits