The PT2-U2.5/PC/M is a universal 2.5mm probe tip for PC male connectors. Lightel currently offers more than 120 standard and specialty tips for thier Series 2 video microscope probes (grey colored probes). All listed tips fit the DI Series, CI-1100, VC-6200-PL, and VC-8200 probes. (These tips cannot be used with the CI-1000 or VC-6100 probes - black colored probes.)