hand drill

Gear-driven hand tool, used mainly to drill holes in wood, soft metal and plastic.

turning handle

Handle whose rotation turns the drive wheel, which in turn transmits the motion to the pinion and the chuck.

side handle

In horizontal drilling, it stabilizes the tool while the other hand rotates the turning handle.

drill

Detachable shank that is inserted into the chuck, whose rotating motion drills holes in various materials.

chuck

Device with jaws for attaching the bit or drill to the tool.

pinion

Small toothed wheel downshifting the turning handle’s motion: each turn of the handle translates into at least three rotations of the chuck.

drive wheel

Toothed wheel that meshes with the pinion, thereby transmitting its rotational motion.

main handle

In vertical drilling, it stabilizes the tool while the other hand rotates the turning handle.

jaw

The parts of the chuck that grip the tool to keep it firmly in place.