These are the nylon guides used on most Beseler 4x5 enlargers as slide bearings that run along the stage mounting bar as you make adjustments to the focus and condenser position. On MX series enlargers, including the 45MX, 45MCRX, 45MX II, and 45MXT, there are a total of 6 - 2 each on the lens stage, lower negative stage, and upper bellows stage. On the 45V-XL they are only used on the upper negative stage. Supplied as a pair.
Note: The installation of replacement slide bearings requires significant disassembly of the enlarger. A complete realignment of the enlarger will be required after the slide bearings are installed and properly adjusted.
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