Best Spiral Flute Hand Adjustable Reamer

Drillco 4570E Series High-Speed Steel Taper Pin Reamer, Helical Flute, Round Shank, Uncoated (Bright)/Black Oxide Finish, 1 Size, 2-15/16\ Length

High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Available in uncoated (bright) and black oxide finish.
Round shanks allow use with a wide variety of toolholding systems.
Square shank allows hand (straight and spiral flute) reamers to be held in a tap wrench or vise, depending on whether the reamer of the part is rotated.

Straight flute reamers should be used in thru-hole applications only.
Blades are adjusted by loosening one nut and tightening the other.
Adjustable blades give the operator the ability to handle multiple hole sizes with a single tool.
Square end allows the user to turn the reamer by hand with an adjustable wrench or straight handle tap wrench.

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 1/2 " flute length, Partial Flute Length Carbide.
3/4 " shank diameter, For Reaming abrasive material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 1/2 " flute length, Partial Flute Length Carbide.
Morse taper shank #3, For Reaming Abrasive Material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 1/2 " flute length, Partial Flute Length Carbide.
Morse taper shank #2, For Reaming Abrasive Material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 3/8 " flute length, Partial Flute Length Carbide.
Morse taper shank #2, For Reaming Abrasive Material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 3/4 " flute length, Partial Flute Length Carbide.
1" shank diameter, For Reaming abrasive material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
2" flute length, Partial Flute Length Carbide.
Morse taper shank #4, For Reaming Abrasive Material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

When the diameter wears down to the low limit, it may be expanded oversize, reground to size and recleared. The expansion screw should never be loosened in an attempt to use the reamer for a size smaller than that to which the tool was originally finish ground. These reamers are inteded to be used for 1 specific diameter, not multiple diameters..
1 7/8 " flute length, Partial Flute Length Carbide.
Morse taper shank #4, For Reaming Abrasive Material.
This is an expansion reamer NOT an adjustable reamer. It can be expanded only and reground..

Premium Material: The material is low alloy steel with high hardenability and low hardenability. The reamer has the characteristics of high wear resistance, less severe cutting and less deformation..
Hand Reamer: Reamer for reaming holes have been drilled after processing (or reaming) on the workpiece, mainly to improve the precision of the hole, reducing its surface roughness, is finishing and semi-finishing tool for the hole..
Straight Flute Tool: 6 Flutes & Straight Shank. Allows chips to collect in the flutes when cutting, well suited for most applications in shallow cuts..
Application Object: Installed in the lathe for cutting of metal tools. Straight flute hand reamers is used in ferrous metals and most nonferrous metals. Designed for accurate reaming in aluminum, cast iron, copper, magnesium alloy, plastic, wood, etc..
Application: Good for general purpose applications, offering combination of hardness and toughness for wear resistance. Features just the base substrate without any additional treatment or coatings, suitable for wide ranges of applications..