Best Onsrud Spiral Router Bits in 2026

Whiteside Router Bits are made with Premium Carbide

Precision ground for proper balance at high RPM

Industrial Quality

Solid Carbide spiral upcut router bits with 1/2inch shank and 1/2inch cutting diameter, 2 inch cutting length, 4 inch for total length

The CNC Router Bits is suitable for Plywood, OAK, MDF, and any hardwood working and Long service life for sharp

Spiral bits used for smoothly upcut groove and slots, Mortises, Cycles and dados with clean edge and bottom, better than straight bits

Specs: Number of Cutters 2, Overall Dia. 3/8", Overall Length 3", Shank Dia. 1/2", Carbide Height 1-1/4"

Fast chip removal with excellent quality and long life

Use in CNC, hand-held and table-mounted routers

Solid Carbide spiral router bit with 1/4inch shank and 1/8inch cutting diameter, 1/2 inch cutting length, 2 inch for total length

For Plywood, OAK, MDF, and any hardwood working and Long service life for sharp

Spiral bits used for smoothly upcut groove and slots, Mortises, Cycles and dados leave with clean edge and top surface, better than straight bits

UP & DOWN cut spiral router bit with 1/4 inch shank and 1/4 inch cutting diameter, 1 inch cutting length, 2-1/2 inch for total length

SOLID CARBIDE AND NANO BLUE COATED: The up and down cut spiral router bit is made of solid carbide. And Nano Blue Coating with high hardness and heat resistance enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality. Clean surface, neat, no glitches.

Spiral bits used for side milling, end milling, finish machining, etc. End Mill Bits can smoothly upcut and downcut groove and slots, mortises, cycles and dados with clean edge and bottom, better than straight bits.

Up cut spiral router bit with 1/2 inch shank and 1/2 inch cutting diameter, 2 inch cutting length, 4 inch for total length

PREMIUM QUALITY: The spiral upcut router bits Made of solid carbide (Tungsten steel), it is high-wearable and has a long life. You can decrease the times of changing cutters, save production time.

The CNC End Mill Router Bits apply to various wood: such as Plywood, OAK, MDF, and any hardwood working and Long service life for sharp. And also for carbon steel, soft alloy steel, tool steel, cast iron, aluminum alloy.

This O-flute bit has a cutting diameter of 1/4", cutting height of 3/4", overall length 2" and 1/4" shank.

For CNC milling and routing on aluminum and plastics where a clean bottom surface edge of material is required

Premium C3 micro-grain solid tungsten carbide for a high-performance industrial quality tool

Specs: Number of Cutters 2, Overall Dia. 1/4", Overall Length 2-1/2", Shank Dia. 1/4", Carbide Height 1"

Chip free cuts on top surface of laminates and veneer panels

Use in CNC, hand-held and table-mounted routers

Material: Solid Tungsten carbide. Durable and sturdy and wear resistant.

Downcut Bits Dimension: 1/8" Shank (3.175mm). Cutting edge diameter, 1/8" (3.175mm). Cutting edge length/flute length, 17mm. Overall length, 45mm

5pcs Downcut Double Flute Spiral CNC Bit: Ideal For carving/cutting/engraving/milling/slotting/sculpturing in materials like MDF, ABS, PVC, acrylic, nylon, resin, plastics, density board, wood, plywood, hardwood etc. Widely used For CNC Engraving, Milling, Roughing, Hollowing, 3D sculpturing purposes

Wide application ---- Used for carving, cutting, engraving, milling in materials like density board, wood, acrylic, plastic, PCB, PVC, PP, MDF, nylon, resin, plywood, hardwood etc.

High efficiency ---- These bits own sharp edge which is able for fast engraving that makes high efficiency

Perfect cutting ---- The design of single flute and larger spiral chip space of CNC Router Bit makes non-stick crumbs, smooth cutting and fast chip-removal

Name: 1/4-Inch Diameter Spiral Flush Trim Router Bits.

Size: Cutting Diameter: 1/4",Cutting Length: 1-1/8",Shank 1/4",Overall Length: 3".

Material: Made of Solid Carbide, with C3 Micro-grain Tungsten Carbide Cutter, Industrial quality router bits provide precise, efficient cuts and offers extreme durability.

Downcut spiral router bit with 1/4 inch shank and 1/4 inch cutting diameter, 1 inch cutting length, 2-1/2 inch for total length

SOLID CARBIDE AND NANO BLUE COATED: The down-cut spiral router bit is made of solid carbide. And Nano Blue Coating with high hardness and heat resistance enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality. Clean surface, neat, no glitches. Up to 2.5X longer life compared to uncoated bits.

CNC Spiral bits used for side milling, end milling, finish machining, etc. End Mill Bits can smoothly downcut groove and slots, mortises, cycles and dados with clean edge and top, better than straight bits.

UP-CUT ROUTER BIT – The up cut router bits are designed for aluminum cutting. Available in single and double flute

FOR ALUMINUM CUTTING – Use the aluminum cutting bit for cutting Fomex with Aluminum Face, Sheet, Block and Plate Aluminum, Aluminum 5052, and Wood.

SMOOTH FINISHES – Double flute router bits provide a smooth finish when grooving and slotting than the single flute router bits.

Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems

Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications

Round shanks allow use with a wide variety of toolholding systems

Type: Spiral (Upcut), Cutting Type: 3 Flutes with Flat End, Shank: 1/8" (3.175mm), Cutting Diameter: 1/8" (3.175mm), Cutting Length: 7/8" (22mm), Overall Length: 1-33/64" (38.5mm)

Spiral bits used for side milling, end milling, finish machining, etc. End Mill Bits can smoothly upcut groove and slots, mortises, cycles and dados with clean edge and bottom, better than straight bits.

The unique flute design makes cutting process easier and faster, smooth cutting without 2nd polishing process.

Machining

Manufacturer: Onsrud

Made in: United States