Inside these use the simplest of the Six Simple Machines... the ramp. Hitting the top converts part of the force into rotation and the rest into shock down the shaft.

Draper 35996 2800M/PZ No 3 Pozi Type Impact Screwdriver Bit, 8mm , Blue
4.0

Impact Screwdriver Set, MAXPOWER 8PCs Reversible Manual Hand Impact Driver Kit with Detachable 1/2-Inch Square Drive, Phillips Bits and Slotted Bit
4.0
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