High-Speed Steel Onsrud Spiral Router Bits - Lee Valley Tools

Free Shipping on orders of $40 or more for a limited time

Learn more
0 Cart Menu


These router bits have several unique features.

The double-flute up-cut spiral design ensures rapid, clean waste removal, particularly in plunge routing where the specially designed end mill lets you plunge without fear of plugging and heat generation.

They are excellent for grooving, slitting, blind routing and end milling.

The bits range in length from 2 5/8" to 3 1/2" according to size. High-speed steel, they are suitable for all woods, non-abrasive plastics, and aluminum. The 3/8" and 5/16" shank diameter sizes require separate bushing adapters (sold separately).

The 1/4" and 3/8” bits are suitable for use with our router letter template set.

Available individually or in sets.

Made in USA.

Related Products

Product Availability At All Stores


Item Added to your cart

{{ products.length }} Items Added to your cart

Items in your cart

Product Title



QTY: 0


Share On Facebook Share via Email


Sign In

User Name is a required field.

Password is a required field.

Forgot password?

Benefits of creating an account:

Create an account

Please enter the username associated with your Lee Valley account and we will send you an email to reset your password.