Manufactured by Onsrud Cutter, these bits are designed for routing where downward chip removal, tool rigidity, long life, and high quality finish is desired.

Find the Part Number for the size you need on the table below, then choose it from the drop down box and add to your cart. If you don't see the Part Number on the table below, please call us at (800) 480-6427 or send us an email; we can special order it for you.

Image	Part Number	Shank	Cutting Diameter	Description
	O57-240	1/4"	1/8" (0.125)	Downcut Spiral - Solid Carbide - Onsrud 57-240; 1/2" Cutting Length, 2" Overall Length
	O57-250	1/4"	5/32" (0.15625)	Downcut Spiral - Solid Carbide - Onsrud 57-250; 5/8" Cutting Length, 2" Overall Length
	O57-260	1/4"	3/16" (0.1875)	Downcut Spiral - Solid Carbide - Onsrud 57-260; 3/4" Cutting Length, 2" Overall Length
	O57-270	1/4"	7/32" (0.21875)	Downcut Spiral - Solid Carbide - Onsrud 57-270; 3/4" Cutting Length, 2 1/2" Overall Length
	O57-280	1/4"	1/4" (0.250)	Downcut Spiral - Solid Carbide - Onsrud 57-280; 7/8" Cutting Length, 2 1/2" Overall Length
	O57-310	1/2"	5/16" (0.3125)	Downcut Spiral - Solid Carbide - Onsrud 57-310; 1 1/8" Cutting Length, 3" Overall Length
	O57-330	1/2"	3/8" (0.375)	Downcut Spiral - Solid Carbide - Onsrud 57-330; 1 1/4" Cutting Length, 3" Overall Length
	O57-340	1/2"	7/16" (0.4375)	Downcut Spiral - Solid Carbide - Onsrud 57-340; 1" Cutting Length, 3" Overall Length
	O57-360	1/2"	1/2" (0.500)	Downcut Spiral - Solid Carbide - Onsrud 57-360; 1 1/8" Cutting Length, 3" Overall Length
	010-00	1/4"	1/16" (0.0625)	Downcut Spiral - Solid Carbide - Onsrud 10-00; 3/16" Cutting Length, 2" Overall Length