The Faithfull Dowel Drill stops clamp on to drill bits enabling a hole of the correct depth to be made. Pack of 3 sizes of drill stops - 6, 8, and 10 mm. 2.5mm hex key is required to fit the drill stops (not included). All product imagery is for illustration purposes only. Appearance and colours are often affected by your display settings and therefore, should not be used for matching purposes.