44mm Sleeve for BB Bearing Extractor CupReceiver cup sleeve for Wheels Mfg sealed bearing extractors. Machined aluminum sleeve, anodized red with 44mm ID and 52mm OD. 1 2" thru hole to fit over our 1 2" threaded rod press handles. This receiver cup is part of a system that requires additional pieces to function. Use the chart below to identify the parts needed for each bearing size. Part (One of each required) 22mm ID Bearings 24mm ID Bearings 25mm ID Bearings 29mm ID Bearings 30mm ID