There are three principal pipe tools: the tamper, the reamer, and the pick:
These three tools can be combined in different ways. Most common is the three-in-one Czech tool, which consists of a tamper, reamer and pick joined together. A pipe knife is another three-in-one tool: the reamer and pick fold into the casing in the same fashion as a pocketknife, while the blunt end is used as a tamper. A pipe nail is a nail-shaped tool with a tamper at one end and a reamer at the other. Tampers and reamers are also made as separate tools.
Czech tool showing from left to right a pick, reamer, and tamper
Aluminum pipe nail
Early modern pipe tamper in the form of an arm
Early twentieth-century pipe tamper depicting a soldier in uniform smoking