Campa BB lockrings, appear to be oversize thread by 0.5mm when they used to produce o/size cups for stripped frame threads see cat.16 Post date November 21, 2023 ← Set of five Campagnolo Triple chainwheel bolts & spacers part nos. 830,831,832. For use with NRecord 144bcd triple chainset or for securing cyclocross discs to a single ring → Campa BB lockring BSC thread NOS
