RS PRO Straight Shank Reamer Bit, 17 → 19mm Diameter, 170 mm Overall

You can use this RS PRO straight shank reamer bit to widen existing holes in a range of materials. It also allows you to ensure that the hole is the right size and finish for receiving a fastener or other component, as you can use it to smooth the sides of holes.


As the reamer bit is made of high-speed steel (HSS), you can rest assured that it's sturdy and heat-resistant. It has six hardened steel blades that fit into tapered keyways and expand as you adjust and reposition them along the bit's length. Screwed end caps can be used to secure the blades in the desired position.


The Hardness Rockwell C rating of HRC 62-66 ensures long-lasting performance. Adjustable reamer bits like this one are often used in a variety of applications where existing holes must be finished to the exact size with a high degree of precision.