Amana Tool 45771 Solid Carbide 30 Degree Engraving 0.005 Tip Width x 1/4 SHK x 2-1/4 Inch Long Signmaking Router Bit Solid Carbide SPECIFICATIONS: Angle (a): 30 Cutting Height (B): 0.440" Shank (d): 1/4 Overall Length (L): 2-1/4 Tip Width (t): 0.005"