Adjustable Hand Reamer – 9CRSI H8 Straight Shank Chucking Reamer, 4-Flute, 12.75-13.75mm Range For Precision Bore Enlargement

About This Product

If you need to enlarge or fine-tune holes with precision, this adjustable hand reamer is a solid tool to have.

It's made from 9CRSI metal, which gives it high hardness and durability.
The range on this model is 12.
75 to 13.

75 millimeters, and the diameter is manually adjustable so you can dial in exactly the size you need within that range.
Perfect for machinists, metalworkers, and serious DIYers.

The reamer has a straight shank and four chip flutes, which help clear debris as you work.
That means smoother cuts and less binding.
The H8 accuracy rating ensures that your finished holes are on spec—tight enough for press fits or dowel pins.
It's built for use on drilling machines, but you can also use it manually for smaller jobs.

What's really nice is the adjustability.

Instead of buying a whole set of fixed-size reamers, this one lets you compensate for wear or adjust for slight size variations.

That saves money and space in your toolbox.
The adjustment mechanism is simple to use—just turn the collar to expand or contract the cutting edges.

It's designed for cylindrical reaming, so it works great on straight bore holes.

The metal construction handles high stress without deforming, so you get consistent results over time.
Whether you're prepping holes for bearings, aligning parts, or doing general machine work, this tool gets the job done.

This reamer is compact, tough, and precise.
It's one of those tools that you don't use every day, but when you need it, nothing else will do.

Good to have on hand for any workshop.