Product: Replacement drill bits for the RESRAUB 4.0 mm hardwood countersink with depth stop — pack of 2. Why you need them: restore the original cutting performance of your RESRAUB countersink without replacing the whole tool. Swap in a fresh bit when the tip dulls or chips to keep countersinks clean, fast, and consistent in hardwood. Key benefits: Precise 4.0 mm size: produces uniform countersink diameters for reliable screw seating and flush finishes. Depth stop compatibility: maintains accurate, repeatable countersink depth for consistent screw heads and reduced over‑driving. Cost-effective replacement: two bits in the pack let you replace a worn bit and keep a spare on hand for uninterrupted work. Optimized for hardwood: geometry and cutting profile are designed to reduce tear-out and produce clean edges in dense timbers. Function and performance: Designed specifically to perform the countersinking action required for hardwoods when used with the RESRAUB 4.0 mm countersink and its depth stop. Replacing a worn bit immediately restores the countersink’s original accuracy and finish quality. Compatibility: Made for the RESRAUB 4.0 mm hardwood countersink model that uses replaceable bits with a depth stop. Use only with the matching RESRAUB countersink assembly to ensure proper fit and depth control. Pack contents: Two (2) replacement drill bits sized for 4.0 mm RESRAUB hardwood countersink with depth stop. Practical use scenarios: 1. Installing hardwood flooring or trim: countersink screw heads precisely so they sit flush or below the surface before filling and finishing. 2. Cabinet and furniture assembly: create consistent, clean recesses for screws in hardwood parts to prevent splitting and ensure tight joints. 3. Deck or stair riser work in hardwood components: control depth for uniform screw seating and a professional final appearance. Quick tips: Replace bits as soon as cutting quality degrades to avoid rough edges and increased tear-out. Confirm the bit is securely seated in the RESRAUB countersink assembly before use to maintain depth-stop accuracy. Tone and trust: straightforward replacement parts manufactured for the RESRAUB 4.0 mm hardwood countersink with depth stop, sold in a pack of two to keep your tool performing reliably.