Replacement 25.4mm Stirrer Shaft, Reactor Size: 30L, Fits Support Frame: CG-1968-X-12, Overall Length: 40.9". Precision ground and polished stirrer shaft for use with Chemglass process reactors. Designed to utilize CG-2095 and CG-2096 PTFE agitators. Lower portion of stirrer shaft is sandblasted and has a 3/8 wide flat. REPLACEMENT STIRRER SHAFTS ARE FOR USE WITH MECHANICAL SEAL STIR BEARING ON LISTED SUPPORT FRAME.