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Whiteside SBU40-3 Spoilboard flattening bit
Whiteside SBU40-3 Spoilboard flattening bit
Whiteside SBU40-3 Spoilboard flattening bit
Whiteside SBU40-3 Spoilboard flattening bit
Whiteside SBU40-3 Spoilboard flattening bit
Whiteside SBU40-3 Spoilboard flattening bit

4″ Up-Shear Surfacing Bit w/ Replaceable Carbide Inserts – AstraHP Coated – Whiteside (SBU40-3)

$566.99

In stock (can be backordered)

This Up-Shear spoilboard surfacing bit measures 4″ wide and comes with 3 *Astra Coated* carbide inserts that can be used on all four cutting edges. 

  • AstraHP Coated
  • 3/4″ Shank
  • 4″ Large Diameter
  • 3 wing body
  • Made in USA

In stock (can be backordered)

  • Standard Shipping starts at $6.75
  • FREE shipping on orders over $139
  • Eligible for return within 30 days.
    Exclusions apply. See our returns policy.
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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