SKU: 81690665491

51504-K Spiral O Single Flute Plastic Cutting Down-Cut Mirror Finish CNC Router Bit 1/4"D 3/4"CH 1/4"SH 2"OL

Sale price$65.25 Regular price$72.50
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

51504-K Spiral O Single Flute Plastic Cutting Down-Cut Mirror Finish CNC Router Bit 1/4"D 3/4"CH 1/4"SH 2"OLThe Amana Spiral O Single Flute Plastic Cutting Down Cut Mirror Finish CNC Router Bit is made to be used only on CNC machines and routers with automatic feeding. Produce super clean, smooth cuts especially in acrylic materials (Plexiglas, Lucite) other plastics and wood. Bits are made according to strict tolerances from an exclusive carbide grade and polished to a mirror finish using Amanas unique process. Designed to eject chips down. Ideal for

The Amana Spiral O Single Flute Plastic Cutting Down-Cut Mirror Finish CNC Router Bit is made to be used only on CNC machines and routers with automatic feeding. Produce super clean, smooth cuts especially in acrylic materials (Plexiglas, Lucite) other plastics and wood. Bits are made according to strict tolerances from an exclusive carbide grade and polished to a mirror finish using Amana’s unique process. Designed to eject chips down. Ideal for industrial applications and CNC machines. Right hand helix right hand cut.


Excellent for cutting:


  • Plastic/Acrylic
  • Acetal and Nylon
  • Acrylic Stone
  • Acrylonitrile Butadiene Styrene (ABS)
  • Aluminum Composite Material (ACM)
  • Alupanel
  • Corian
  • Coroplast
  • Corrugated Plastics such as Correx Boards and Polypropylene
  • Crosslinked Polyethylene (XPE, PEX, XLPE)
  • Delrin
  • Dibond
  • Extruded Acrylic
  • Foam Board
  • Fomex
  • Gatorfoam
  • Hard Plastic
  • High Density Polyethylene (HDPE)
  • High Density Urethane (HDU Board)
  • High Impact Polystyrene (HIPS)
  • High Impact Polystyrene (HIPS) for digital printing
  • High Pressure Laminates (HPL)
  • Hydroxy-Terminated Polyether (HTPE)
  • King ColorCore The Multi-Color Engravable Polymer Sheet.
  • Laminate
  • Low Density Polyethylene (LDPE)
  • LubX
  • Lucite
  • Mechanical/Engineered Plastics
  • Perspex Cast Acrylic Sheet
  • Plexiglas
  • Poly (methyl methacrylate) (PMMA)
  • Polycarbonate (Lexan) - Use the slowest suggested feed rates and the shortest bits necessary for cutting and routing Lexan.
  • Polyethylene Terephthalate Glycol-Modified (PETG / PET-G)
  • Polyoxymethylene (POM), also known as Acetal, Polyacetal and Polyformaldehyde
  • Polystyrene (PS)
  • PVC
  • Sign Foam
  • Sintra PVC
  • Solid Surface
  • StarBoard (King StarBoard 'R') High Density Polyethylene Sheet (HDPE)
  • Teflon
  • Thermoplastic Polyolefin (TPO)
  • Trespa Meteon
  • Ultra High Molecular Weight Polyethylene (UHMWPE)
  • Urethane
  • Vinyl Flooring
  • Wood

Benefits of Mirror-Finish:


  • Razor sharp cutting edge
  • Effortless chip removal
  • Helps prevent chip re-welding
  • Extends tool life
  • Exceptional cut quality
  • Dissipates heat well and prevents melting

Amana Spektra bits feature a nACo nanocomposite coating with an extreme nano hardness and heat resistance. With a brilliant distinctively-tinted coloring nACo provides additional improvements in four critical aspects of router tooling:


  • nACo coating is a micro-thin ceramic coating which enables the tool's cutting edge to retain crucial sharpness and lubricity. This provides longevity and produces cutting results of the highest quality.
  • Coating prevents high heat and oxidation which is detrimental to cutting tool performance.
  • Multi-colored hues, while attractive, will dissipate upon use and yet coating will remain fully effective.
  • nACo offers approximately 4,500 Vickers for impressive solid hardness on cutting areas of the tool, for an increase up to 2.5 times compared to uncoated bits.
  • Note: Blue based color dissipates immediately upon use. nACo nanocomposite coating will not wear off.

Specifications

  • Diameter: 1/4"
  • Cutting Height: 3/4"
  • Shank: 1/4"
  • Overall Length: 2"


Shipping / Billing Information

This product ships direct from the manufacturer:

  • Your order will ship in approximately 5 business days.
  • This product is considered special order. Your account will be charged when you place your order.
  • Express or overnight shipping is not available for this product.
  • Ships by Ground to the 48 contiguous states. Cannot ship to Alaska, Hawaii, PO Boxes, APOs, US Territories, Canada or other foreign countries.

Return Information

Amana Tool accepts returns in new saleable condition only within 60 days of purchase and requires a Return Authorization. Contact Woodcraft Customer Service for Return Authorization. A restocking fee of up to 20% may apply. Customer pays return freight. The tools are to be packed carefully. Saw blades must be shipped in an exterior carton for protection. Saw blades shipped with only Amana Tool saw blade sleeves or clamshells will be refused.

Warranty Information

Amana Tool warranties against defects in material or workmanship for 30 days. All other warranties, either expressed or implied, are denied.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 81690665491

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4.3 ★★★★★
Based on 18 reviews
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Product Reviews
C
Verified Purchase
Chris H
Grantham, US
★★★★★ 5
It fits
Color: 14Pcs Eufy E25/E28/C28 Bags
Fits my eufy 25 perfectly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2025
J
Verified Purchase
joseph torres
Louisville, US
★★★★★ 5
Precise fit
Size: Eufy E25 Omni / E28 Omni E28
Perfect fit for eufy E28 system Follow instructions and you will be a happy camper.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
M
Matt M.
Lexington, US
★★★★★ 5
Decent Accessory Kit
Size: Eufy E25 Omni / E28 Omni E28, Size: Eufy E25 Omni / E28 Omni E28
This is a decent accessory kit I got for my E28! This kit comes with so many of the parts I needed to keep my E28 up and cleaning well. The accessories each fit my bot very well - the roller brush slid on with no issue and it didnt bind in any way. The knap on the brush is decent (a bit knappier than the OEM). This is nice because I have textured tile so a better knap will help clean inside the nooks and crannies. The kit comes with a lot of the needed items for the bot. One negative (but I didnt take away a star because this can happen in others as well) was that the cardboard on the dust bag didnt have enough glue to keep the bag on the stock board - it tore away super easily which was a bummer to lose a whole bag. Not the end of the world, but be carful inserting the bag properly to avoid tearing it away/open. All in all this is a decent kit and is a fraction of the price of others. Additionally, it is one of the least expensive kits on Amazon, which is nice - because we all could stand to save a buck or two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
T
TSR
Grantham, US
★★★★★ 5
Eufy Replacement Parts
Size: Eufy E25 Omni / E28 Omni E28, Size: Eufy E25 Omni / E28 Omni E28
The 14-piece replacement parts for the Eufy E25 Omni made a huge difference. It came with a roller mop, roller bushes, air filters, and dust bags. I hadn’t replaced any of my parts for quite a while and the vacuum was starting to not work very well. I ordered this set hoping for the best and was really impressed by the quality of the parts. Everything worked beautifully and installation was a breeze. After just a few seconds I replaced everything that needed to be changed and was scheduling for a cleaning. The new parts made a big difference in how well the vacuum performed and I couldn’t believe how much cleaner the floor was. I am totally happy with my order and will continue to use these parts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
U
Verified Purchase
UberConsumer
Charlottesville, US
★★★★★ 1
Don’t buy
Size: Eufy E25 Omni / E28 Omni E28
Black roller brush doesn’t fit. Quality is not the same as eufy. The filter doesn’t have as many pleats ergo doesn’t filter as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026

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