This is the Vane Kit for Becker VX 4.40 pumps (Part #90139700007) . It includes a complete set of 7 high-quality carbon vanes designed specifically for the Becker VX 4.40 dry-running vacuum pump . Each vane measures 95mm x 41mm x 4.3mm . Replacing worn vanes restores your pump’s vacuum strength and efficiency.
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