Specifications • Clamping hole range (requires a reducing sleeve): Φ12 Φ20 • Effective length range: 155-170mm Features 1. Hydraulic clamping doubles the precision. 2. Easy clamping improves efficiency by 100%. 3. Self-compensation boosts tap efficiency by 100%. 4. Reduces the need for high machine accuracy, compensating for machine synchronization errors. For more product details, please visit big-tools.com. Let me know if you need any adjustments!