Replacement inner shaft S-93 measures 39" in length. Works with most standard motors such as the CC, DD, K, L, LM, LB, LX, LXM, LXB, MM, PG, PGX, R, RB, S, SB, SM, SR, SRM, (1/8HP versions of SR/SRM/SRB sold prior to 2006) TX, TXM, TXB.
Replacement shafts require a VERY light coating of Foredom grease (sold separately) before use.
Be sure to UNPLUG your motor before doing any maintenance and NEVER operate your Foredom with the outer sheath removed.