Brunswick Blue Diamond Tips (12mm)
Made in the USA by Brunswick from hand-selected water buffalo hide.
Infused with velvet-grade silica for maximum adherence, and formed under 40,000 pounds of pressure to ensure uniform density.
In play they're much harder than Elkmasters so they require better cueing when playing with off-centre striking.
You can find JP's guide to retipping a snooker cue here.