Best Bosch Router Spiral Bits in 2026

RANGE OF PROCESSING: For carving/cutting/engraving/milling/slotting/sculpturing in materials like MDF, ABS, PVC, acrylic, nylon, resin, plastics, density board, wood, plywood, hardwood etc. Ideal for three-dimensional sculpture, surface machining, 3D relief sculpturing, etc

DIMENSIONS: Shank Dia=1/8" (3.175mm). Cutting edge diameter=1/8" (3.175mm). Cutting edge length/flute length=17mm. Overall length=38.5mm

HIGH EFFICIENCY: These bits own sharp edge which is able for fast engraving that makes high efficiency, durable, high precision and not easy to break. It is smokeless and burr-free while processing

Range of processing ---- for cutting/engraving/carving/sculpturing/roughing/milling in materials like MDF, ABS, PVC, acrylic, density board, wood, plywood, rosewood, hardwood etc.

Dimensions ---- diameter : 1/8 (3.175mm); cutting edge diameter : 2mm; cutting edge length (CEL)/flute length: 17mm; overall length: 38.5mm

High efficiency ---- these bits own sharp edge which is able for fast engraving that makes high efficiency; durable, high precision and not easy to break; it is smokeless and burr-free while processing

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

Number of flutes: 1; Shank diameter (SD): 1/8"(3.175mm) approx.

Cutting edge diameter (CED): 1.5mm

Cutting edge length(CEL)/ Length: 6mm

Range of processing ---- for carving/cutting/engraving/milling in materials like density board, wood, acrylic, PVC, PVC expansion sheet, plastics, MDF etc.

High efficiency ---- these bits own sharp edge which is able for fast engraving that makes high efficiency; durable, high precision and not easy to break; it is smokeless and burr-free while processing

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

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

Range of processing ---- for carving/cutting/engraving/milling/drilling/roughing/slotting/sculpturing in materials like MDF, ABS, PVC, acrylic, nylon, resin, plastics, density board, wood, plywood, hardwood, solid wood etc. Ideal for three-dimensional sculpture, surface machining, 3D relief sculpturing etc.

Shank diameter (SD): 3.175mm (1/8") approx.

Overall length/Total Length: 38.5mm approx.

Range of processing ---- for cutting/engraving/carving/drilling/sculpturing/milling in materials like MDF, acrylic, density board, solid wood, wood, plastics, PVC, PVC expansion sheet, thin aluminum, PP, ABS etc.

High efficiency ---- these bits own sharp edge which is able for fast engraving that makes high efficiency; durable, high precision and not easy to break; it is smokeless and burr-free while processing

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

Range of processing ---- for carving/cutting/engraving/milling/drilling/roughing/sculpturing in materials like MDF, acrylic, aluminum, wood, composite board, plastics, double color plate, ABS, PVC, organic board, solid wood, PVC expansion sheet etc.

Shank diameter: 6mm; Overall length/Total length: 45mm

Cutting edge length /Flute length: 22mm

DOWN CUT BITS DIMENSION: 1/4" Shank (6.35mm). Cutting edge diameter: 1/8" (3.175mm). Cutting edge length/flute length: 13/16”(20.63mm). Overall length: 2-1/2”(63.5mm)

DURABLE & LONG-LASTING TOOL LIFE: high-quality solid carbide router bits with nano blue coat feature with high hardness, heat resistance, and long-lasting cutting-edge performance ensure high work efficiency.

EXCELLENT PERFORMANCE: The nano blue coat enables the tools cutting edge to retain pivotal sharpness and fluency which ensure longevity and provide better cutting results of the highest quality. Down cut bit cuts from the surface down leaving a smooth edge at the surface.

Package contents ---- 4 type bits each 10pcs assorted in 4 storage cases (will meet most standard milling applications), including two flute3.175 spiral bits/two flute 3.175 ball nose bits/four flute 3.175 spiral bits/titanium coated v bit 3.175 10° 0.1mm tip

Premium quality ---- Quality tungsten carbide material; precision edge-grinding technology; long service life, not easy to break; Excellent cutting results and enhanced productivity

Wide application ---- Used for carving, cutting, engraving, milling, dadoing, boring, routing, slotting in materials like density board, wood, acrylic, plastic, PCB, PVC, PP, MDF, nylon, resin, plywood, hardwood etc.; V bit cutters are used for PCB, SMT, mold, plastic, thin copper/aluminum/stainless steel and other precision metal parts processing

DIMENSION: 1/4" Shank (6.35mm). Cutting edge diameter: 1/16" (1.59mm). Cutting edge length/flute length: 1/2”(12.7mm). Overall length: 2”(50mm). Spiral-flute bits combine a shearing action in cutting with an augering action in chip clearance. The shearing action yields an especially clean accurate cut while the augering action clears chips from the cut.

PREMIUM QUALITY: Solid Carbide Flat End Spiral Router Bit with a .0614 (1/16″) cutting tip. Used for carving and sign making on soft woods or excellent for milling PVC and other soft material. High hardness, heat resistance, and long-lasting cutting-edge performance ensure high work efficiency.

EXCELLENT PERFORMANCE: The nano blue coat enables the tools cutting edge to retain pivotal sharpness and fluency which ensure longevity and provide better cutting results of the highest quality. Down cut bit cuts from the surface down leaving a smooth edge at the surface.

Range of processing ---- for carving/cutting/engraving/milling/drilling/roughing/slotting/sculpturing in materials like MDF, ABS, PVC, acrylic, nylon, resin, plastics, density board, wood, plywood, hardwood, solid wood etc. Ideal for three-dimensional sculpture, surface machining, 3D relief sculpturing etc.

Dimensions ---- shank diameter (SD): 1/8" (3.175mm); cutting edge diameter (CED): 1/8" (3.175mm); cutting edge length (CEL)/flute length: 12mm; overall length (OAL): 38.5mm

High efficiency ---- these bits own sharp edge which is able for fast engraving that makes high efficiency; durable, high precision and not easy to break; it is smokeless and burr-free while processing

PREMIUM DOWN CUT FLUSH TRIM ROUTER BIT: 1/4” Shank, 1-1/8” Cutting Length, 3” Total Length

PROFESSIONAL & EXCELLENT PERFORMANCE: HQMaster down-cut flush trim router bit is made of industrial-grade high-quality tungsten carbide. The two independent ball bearings with forced-on steel collars at the tip of each bit ensure smooth rolling, straight and even Cutting on different material

2.5 TIMES LONGER LIFE: The Nano Blue coated bit provides longevity and produces cutting results of the highest quality. The coating helps to prevent burns on wood as well as maintain high hardness, crucial sharpness, and lubricity.