- Trutack bone tack 2.5 mm head 3 mm titanium alloy. - Self-tapping - Threaded bone tacks. - The trutack™ design makes membrane stabilization quick and easy. - Our thumbtack incorporates a hexagon head and spirals on its axis, which allow easy removal. - Our trutack™ snaps in like a thumbtack and removes like a screw. **For further product information, please contact Chat Support**