The Dormer B901 BS 328 H7 Form B machine reamer is a high-precision tool specifically designed for machining holes with an H7 tolerance. With a nominal diameter of 2.5 mm and an overall length of 58 mm, this reamer is ideal for applications in various materials, including carbon steel, steel alloys, cast iron, as well as aluminum and copper. The bright steam-hardened surface made of HSS-E (high-speed steel) ensures improved wear resistance and longevity, while the slight left-hand spiral and cylindrical shank allow for precise and efficient machining. This tool is particularly suitable for producing precise and smooth holes in metalworking.

• High-precision machining according to BS 328 standard for H7 tolerance
• HSS-E material with bright steam-hardened surface for increased durability
• Suitable for a variety of materials, including steel and aluminum
• Slight left-hand spiral for improved cutting performance and efficiency.