Button type, solid glass stirring shafts, 5 & 6mm OD. Precision ground shafts, codes -04 & -06, should be used in matching glass Trubore 9524 and 9527 bearings. Polished shaft, code -40, should be used only in our 8066-120, 6mm PTFE inner bearing. All accept our 9542 blades. Join to stirrer motor using 8124 series chucks. 318mm overall length ideal for use in 250ml and smaller flasks.