Amana Tool dowel drills are coated with a special Polytetrafluoroethylene (PTFE), a non-stick color coating. Industrial Through-Hole with V-Point Boring Bits are coated with a non-stick coating for longer lasting cutting edge and tool life. Amana Tool Brad Point - 70mm Long - 10mm x 30mm Shank-Right Hand in stock and ready to be shipped today. We have a large selection of brad point boring bits... Shop Amana Tool's 9/32" x 70mm Through-Hole Boring Bit, Left Hand. Coated with a non-stick PTFE coating for longer lasting cutting edge and tool life Once the tool starts drilling, the coating is cleared off the needed cutting edge right away, #414281, (B) Cutting Height: 40mm, (D) Diameter: 9/32, (d) Shank: 10mm, Overall Length (L): 70mm, Rotation: Left Hand414281 Carbide Tipped Through-Hole Boring Bit L/H 9/32 Dia x 70mm Long x 10mm Shank 70mm Long Through-Hole Boring Bits - Through-Hole Boring Bits - Boring & Drilling Bits - Industrial Quality from Amana Tool - Products Dowel Drilling Bit With PTFE Coating 4mm Boring Bit Carbide Tipped - Amana Tool 314004, 70mm Length 9/32 Inch Diameter Boring Bit