ITEM NAME:1/4 Shank Triple Double Flute Column/Face Molding Router Bits Description: Router CNC Engraving Wood Working Triple Bead Router Bit - 1/4'' Shank. Industrial grade micro grain car.Shank Size: 1/4". Build-up & heat resistant polytef coating, anti-kickback design. Color: Yellow. SKU: FUZ0019580460023901. Number of Flutes: 2. Radius: 3/32".