Spend less time fitting a new calliper by repairing the bleed nipple. With this Nipple Treatment repair kit you can save huge amounts of money because there is no need to replace the calliper. Drill out the old nipple, tap a new hole, and replace with the replacement bleed nipple in just 3 simple steps. This exclusive design is the quickest, cheapest and easiest solution to a common problem. Patent Pending Design. Size: M5 & M8.