By making a banjo bolt that you can put the bleed nipple in, you can bypass trying to remove a stuck bleed nipple in your caliper
If you’ve got an older motorcycle you’ve probably been there – you go to bleed your brakes and find instead you break your bleed nipple. Now you’re stuck with the head in your hand and the thread in the caliper.
Bleed nipples, even stainless steel ones, are prone to corrosion. Even if you keep the bleed nipple cover on to keep the wet out, every time you bleed the brakes you’ll be inflicting wear on the head of the bleed nipple when you unscrew it. If your bleed nipple breaks or is resolutely stuck in the caliper, usually you have two choices – attempt to remove it, and risk damaging the caliper, or drill the remaining fragments out, retap the thread and use a bleed nipple one size larger, if you can find one. Either way can become very expensive.
Fortunately, there is a far easier alternative that few people know about.