Amana Tool 51733-K Spektra Extreme Tool Life Coated SC Spiral Finisher 3/8 Dia x 1-1/8 Cut Height x 3/8 Shank x 3 Inch Long x 3 Flute Down-Cut Router Bit, Leaves an Extra High Surface Finish

  • SKU: 51733-K
Availability: In Stock
$128.54 
$87.64

Leaves an Extra High Surface Finish

Those seeking improved surface finishes in either plastic, woods and other materials would do well by using Amana Tool®'s 3 flute, Low Helix Finishers. The unbeatable combination of three keen edges and a gentle 10? helix equates to a stiffer tool that minimizes both part movement and edge burring, leaving a smooth finish. 

  • 3 Flute
  • Low Helix Up-Cut and Down-Cut
  • Leaves an Extra High Surface Finish

Excellent for Cutting:

  • Plastic
  • Acrylic Stone
  • Acrylonitrile Butadiene Styrene (ABS)
  • Corian
  • Composite Plastic
  • Coroplast®*
  • Delrin®
  • Foam
  • Fomex®
  • Hardwood
  • High Impact Polystyrene (HIPS)
  • High Pressure Laminates (HPL)
  • Hydroxy-Terminated Polyether (HTPE)
  • Low Density Polyethylene (LDPE)
  • LubX®
  • Perspex® Cast Acrylic Sheet
  • Poly (methyl methacrylate) (PMMA)
  • Polyethylene Terephthalate Glycol-Modified (PETG / PET-G)
  • Polyoxymethylene (POM), also known as Acetal, Polyacetal and Polyformaldehyde
  • Precision Board
  • Sign Foam
  • Softwood
  • Solid Surface
  • StarBoard® (King StarBoard 'R') High Density Polyethylene Sheet (HDPE)
  • Thermoplastic Polyolefin (TPO)
  • Urethane

*Coroplast® is soft plastic cardboard made with super soft, super flexible PVC.


Spektra™ bits feature a nACo® nanocomposite coating with an extreme nanohardness 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.

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