A sledgehammer is a percussive hand tool with a massive striker.
There are three main types of sledgehammers that comply with GOST 11402-75 or GOST 11401-75:
- Blunt-nosed sledgehammer (weight from 2 to 16 kg)
- Sharp-nosed transverse sledgehammer (weight from 3 to 8 kg, the presence of a sharp point on one side of the striker)
- Sharp-nosed longitudinal sledgehammer (weight from 3 to 8 kg, parallel arrangement of the spout to the handle)



