Many inquire about center sizes. Here's a quick reference of some of our most popular, so you don't have to go searching:
LIVE CENTRE SYSTEM (SKY 5015)
HOLLOW CUP CENTER & POINT FOR LIVE CENTRE SYSTEM (SKU 5014)
NOVA 1/2″ FLEXIBLE POINT DRIVE CENTER (SKU 9019)
NOVA 7/8″ FLEXIBLE POINT DRIVE CENTER (SKU 9020)