4.00mm HSS Hand Reamer

• Hand reamers are made of high-speed steel and are generally used by hand for the final sizing of holes
• The square on the shank is suitable for holding in a tap wrench or a vise depending on whether the reamer or the part is rotated
• A long starting taper is ground into the reamer for easy entry and accurate alignment
• The straight-flute hand reamer is recommended for most hand reaming applications
• The spiral-flute hand reamer is recommended for applications where there is an interrupted cut such as a keyway