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*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit
Astra Coated Whiteside 1403 Round Nose CNC bit
*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit
*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit
*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit
Astra Coated Whiteside 1403 Round Nose CNC bit
*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit
*AstraHP Coated* Bits&Bits 425-SRB375 – 3/8″ round nose router bit

3/8″ Ball Nose Spiral Bit – 1/4″ Shank

$52.99

Grab 4, pay for 3. Same shank, no funny business. 😎

In stock

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
  • 3/16″ Corner Radius
  • 1″ Cut Length
  • Up-cut
  • 3 Flute
  • 2-1/2″ Overall length
  • Recommended RPM: 16,000
  • Made in USA

CNC-HandRouter-RouterTable
CNC-HandRouter-RouterTable

In stock

  • Standard Shipping starts at $6.75
  • FREE shipping on orders over $139
  • Eligible for return within 30 days.
    Exclusions apply. See our returns policy.
  • Secure checkout protected by SSL encryption.
SKU: 425-SRB375 Categories: , , Brand:
Shipping Info

  • Same-Day Shipping: Orders placed by 2:00 PM PST, Monday–Friday, ship the same day.

  • Custom Engraving Tools: Made to order and typically ship within 1–2 business days.

  • Standard U.S. Shipping: Starts at $7 and delivers in 3–10 business days.

  • Express Shipping: $10.99 with 2–3 business day delivery.

  • Next Business Day Shipping: Starts at $35.

  • International Shipping: Available via FedEx only. Rates calculated at checkout.

New, unused in-stock tools may be returned within 30 days of delivery for a full refund.
Made-to-order tools—such as custom engraving cutters—may be returned but are subject to a 25% restocking fee.

Customers are responsible for return shipping costs unless the return is due to our error (such as receiving an incorrect or defective item). After 30 days, refunds or store credit may be offered at our discretion, except for warranty-related issues. Start your return here.

Unused items may also be exchanged for other tools; shipping charges apply unless the exchange is required due to our mistake.

If your order arrives damaged, please email info@bitsbits.com

Speeds & Feeds

This data serves as a general guidance only.
Soft/Hard Woods/ MDF – Spindle Speed- RPM: 16-18K  – Feed Rate – IPM : 180-280″
Plastics / Aluminum – Spindle Speed- RPM: 16-18K  – Feed Rate – IPM : 120-200″
Max Cut depth per pass 1/4″