Spare solid glass stopcock key, NS 14,5, 2pc/pk Back Catalog number: OST-227-3141 Availability: In the manufacturer's stock Price on request - + Recommended C-CL010 Penclips, pk10 Price on request M-CHCT-250 Calibration tool for M-CTE250I, pk 4 Price on request C-POD-SP10 POD Support Plate, with clip, pk 10 Price on request