An instrument used to hold rotary or reciprocating tools for cutting tissue, condensing materials, or removing surface deposits. It is connected by an arm, cable, belt, or tube to the power source. The handpiece head may be in line with the long axis of the shaft (straight) or be right-angled or contra-angled. Handpieces can be powered electrically using gears or by air or water turbine. The rotational cutting tool speed can also vary from approximately 100 rpm for electrically powered handpieces to 500,000 rpm for air turbines. Handpieces are not normally disposable and after use require to be detached, cleaned, decontaminated, and sterilized according to the manufacturer's instructions and local policy.