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The 4mm Step Drill is suitable for use with decking screw. It pre-drills a hole at correct diameter and countersink the timber with perfect finish each time.
- For use with decking screw
- Specifically designed to be used with the Spax-D decking screw
- Step drill will pre-drill your hole at the correct diameter and countersink the timber at the correct diameter for the Spax D-head
- Ensures a perfect finish every time