powertools - Want to know how hex bit shank works and the history behind it's design - Home Improvement Stack Exchange

I have tried to search this in google but I haven't found a complete explanation, so I ask this here. I also have read other answers related with hex bit socket, but it still not satisfied. How the

Why does a driver bit shank have an indentation? - Home Improvement Stack Exchange

Building Products Digest - July 2003 by 526 Media Group - Issuu

Drill America 3/16 in. Quick Change Drill Bit with Hex Shank (12-Pieces) KFDHEX3/16P12 - The Home Depot

Snappy Tools Quick-Change 5-Pc. Countersink Drill Bit Set. Proudly Made in The USA. - Counter Sink Bits

Driven 1/4-in Impact Driver Bit (48-Piece)

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20V MAX Brushless Cordless Hammer Drill/Driver and Impact Driver Combo Kit with DEWALT POWERSTACK Compact Batteries

DEWALT 20V MAX Brushless Cordless Hammer Drill/Driver and Impact Driver Combo Kit with DEWALT POWERSTACK Compact Batteries

Industrial Power Tools 2010-11 - Atlas Copco

Why do people use screws that won't stay on the end of a screwdriver? - Quora

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Toolguidewinter2016 by nguyen tien thanh - Issuu

tools - What do the 1/4 , 3/8, and 1/2 in the impact drivers mean? - Home Improvement Stack Exchange

Techs Edge Q4 18 by William Dodd - Issuu