DRB-433 CNC Polycrystalline Diamond (PCD) Ball Nose 3/16 Radius x 3/8 Dia x 1/2 x 3/8 Shank x 3 Inch Long x 2 Flute Router Bit


Usually ships on the 2nd business day from order date.
Diameter (D) 3/8
Radius (R) 3/16
(B) Cutting Height 1/2
Shank (d) 3/8
Overall Length (L) 3
Max Rpm 18,000
Flutes 2
You will receive a courtesy discount of 5% if your cart exceeds $100 :)


Cut half-round grooves for fluted moldings, columns, millwork and signs using a core box bit. Used with an edge guide, it can cut coves. Perfect for making flutes on CNC machines.

Diamond is the hardest material on the earth. Polycrystalline Diamond (PCD) tooling is manufactured in a high-temperature and high-pressure laboratory that fuses diamond particles onto a carbide substrate, which allows the diamond to be brazed onto a tool body.

If you’re looking for the ultimate in tooling you’ve found it! Amana Tool’s PCD ball nose router bits are designed to eliminate tool marks that commonly appear when used with plastic and solid surface materials. The cutting edge lasts much longer than carbide for extremely long life.

Perfect for juice groove in cutting boards.

Excellent for Cutting:

  • Carbon Fiber Reinforced Plastic (CFRP)
  • Composites
  • Plastics
  • Wood
Benefits of Diamond Technology
  • Harder cutting edge provides higher resistance to wear
  • Cut thousands of feet more than carbide without changing tool saving setup time
  • Optimized machine tool efficiency
  • Quality of finish is often significantly improved


Diameter (D) 3/8
(R) Radius 3/16
(B) Cutting Height 1/2
Shank (d) 3/8
Overall Length (L) 3
Max RPM 18,000
Flutes 2