Premium CNC & Router Bits for Precision Cutting

3/8″ Spiral Bowl and Tray Bit – 1/8″ Corner Radius – 1/4″ Shank (AstraHP Coated)

Solid carbide 3/8″ cut diameter bowl and tray bit with 1/4″ shank, perfect for trim routers and desktop CNCs! AstraHP Coated Solid Carbide 1/4″ Shank 3/8″ Cut Diameter 1/8″ Corner Radius 1″ Cut Length Up-cut 3 Flute 2-1/2″ Overall length Made in USA #row-1561121190 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1798502164 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1798502164 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1798502164 { padding-top: 2px; padding-bottom: 2px; } }

3/8″ Spiral Bowl and Tray Bit – 1/8″ Corner Radius – 1/4″ Shank (AstraHP Coated) - Main image
$45.53 $68.99 In stock

Category: 1 43 Shank Spiral Bits

Speeds and Feeds for 425-BT375

  • Spindle Speed: 16,000 RPM
  • Feed Rate: 120-150 IPM
  • Depth per Pass: 1/8-1/4″
  • Stepover: 5-40%

This is a recommended starting point and does not warranty against breakage.

Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 5 reviews)

Evelyn Q. ★★★★★

The 1/4" shank chucked up solid in my router with zero wobble, and the AstraHP coating is still slick after a few dozen feet of cutting. I took 1/8" passes at 5% stepover and the finish on the tray floor came out glass smooth.

Robert ★★★★★

Ran it at 16k RPM and 130 IPM in red oak and the corners came out clean with no tearout. The 1/8" corner radius is perfect for the tray bottoms I'm cutting, and the AstraHP coating still looks new after a few hours of use.

Ella ★★★★★

Dialed in a 1/8" depth per pass on some walnut and the AstraHP coating kept it cutting cool the whole time. The 1/8" corner radius leaves a nice soft edge on tray pockets without any sanding. Zero tearout on the end grain, which I wasn't expecting.