A reamer is a rotating tool with one or more teeth used to remove a thin layer of metal from the surface of a machined hole. A reamer is a rotary precision machining tool with a straight or spiral edge, used for reaming or expanding holes.

Advantages and characteristics

● High cutting speed

● Simple and reliable design

● Easy to operate

● Re grindable (only applicable to uncoated)

● Installation and usage errors usually do not result in complete tool damage