WR | 1/4" Square Drive High Speed Steel Reamers for Cast Iron

• Precision sized
• Piloted
• Will size multiple guides without losing their efficiency
• NOT for use with hardened guides
• Use without reaming oil
• Reamers from 5.5mm to 7.0mm have a 3/16" square drive
• Reamers 8.0mm and larger have a 1/4" square drive