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1/2″ Ball Nose Spiral Bit – 1/4″ Shank (AstraHP Coated)

Used for milling rounded slots, slopes and machining 2D/3D dimensional contours with a smooth finish. AstraHP Coated Solid Carbide 1/4″ Shank 1/2″ Cut Diameter 1″ Cut Length Up-cut 2 Flute 2-1/2″ Overall length Made in USA #row-1055606499 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_204060321 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_204060321 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_204060321 { padding-top: 2px; padding-bottom: 2px; } }

1/2″ Ball Nose Spiral Bit – 1/4″ Shank (AstraHP Coated) - Main image
AstraHP Coated Bits&BIts 1/2" Ball nose spiral CNC/Router bitAstraHP Coated Bits&BIts 1/2" Ball nose spiral CNC/Router bitAstraHP Coated Bits&BIts 1/2" Ball nose spiral CNC/Router bit
$41.99 $69.99 In stock

Category: Ball End Mill Ball Nose End Mills

This 1/2-inch ball nose spiral bit with a 1/4-inch shank is designed for CNC and router applications, featuring an AstraHP coating for enhanced performance. The ball nose shape is ideal for carving, contouring, and 3D work, providing a smooth finish on a variety of materials.

  • 1/2-inch cutting diameter with a 1/4-inch shank for compatibility with standard routers and CNC machines.
  • Ball nose spiral design helps deliver clean cuts and efficient chip evacuation.
  • AstraHP coating adds durability and helps reduce friction during use.
  • Suitable for detailed carving, profiling, and finishing tasks.
  • Product code: 425-SRB500.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Timothy H. ★★★★★

Bought this for 3D relief carving on my router and the ball nose leaves almost no sanding marks on the curves. The 1/4-inch shank fits my collet perfectly with zero runout.

Henry R. ★★★★★

The AstraHP coating really holds up—I've been cutting hardwood for hours and the edge still feels sharp. The ball nose leaves a smooth radius on my carved trays with barely any sanding needed afterward.

Olivia P. ★★★★☆

The AstraHP coating really does the job—I’ve been running it on walnut and it’s holding an edge far longer than my uncoated bits. The 1/4-inch shank fits my router collet without any wobble, though I did have to slow the feed rate a touch to avoid chatter on deeper passes.

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