KnKut 5/16" - 9/16" Hole Expansion Step Reamer - R W THOMPSON INC

Features and Benefits:

• 90° Notch Point starts holes easily
• 5 hole enlargement steps
• 3/8 Shank Diameter
• 3-Flats on Shank
• Size Range: 5/16" - 9/16"

USA Made KnKut Step Reamers accurately starts on contact and enlarges and deburrs holes in material up the 1/2" thick.  Gold Oxide treatment enhances lubricity, reduces friction and increases toughness.