Robinair (19776 Replacement Recycling Filter Drier for 17800B Robinair A/C Recycling Filter Drier Genuine Robinair replacement part features OE fit, form, and function to ensure ease of installation and proper performance Specially blended materials for maximum acid and moisture removal For use with Robinair Nos. 17800B Multiple Refrigerant Recovery, Recycling, and Recharging Machine Sold individually